WooCommerce Subscriptions Renewals: Critical error with WooCommerce Tax and Avatax

### Description

When WooCommerce Shipping & Tax is active with “Enable automated taxes”, and AvaTax is also active and calculating taxes, WooCommerce Subscriptions renewals cause the site to throw a critical error and do not complete.

### Steps to Reproduce

1. Install WooCommerce Shipping & Tax, WooCommerce AvaTax, and WooCommerce Subscriptions
2. Configure AvaTax account so that tax calculation is active
3. Enable WooCommerce Tax automated taxes at **WooCommerce > Settings > Tax**
4. Create a new subscription at **WooCommerce > Subscriptions** with any payment method, or choose an existing subscription that is Active.
5. In Subscription Actions, select "Process Renewal"
6. See critical error on site; note that subscription remains `On Hold` with associated renewal order in `Pending Payment` status.

If WooCommerce Tax automated taxes are disabled, the error is not thrown.

### Screenshots

*Link to image: https://d.pr/i/oojUAm*

*Link to image: https://d.pr/i/Yyp6mg*

*Link to image: https://d.pr/i/8lGIlz*

*Link to image: https://d.pr/i/8LaPo2*

#### Additional details

Stack Trace

```
CRITICAL Uncaught Error: Call to a member function get() on null in /srv/htdocs/wp-content/plugins/woocommerce-services/classes/class-wc-connect-taxjar-integration.php:781
Stack trace:
#0 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(287): WC_Connect_TaxJar_Integration->append_base_address_to_customer_taxable_address(Array)
#1 /wordpress/core/5.5.3/wp-includes/plugin.php(206): WP_Hook->apply_filters(Array, Array)
#2 /srv/htdocs/wp-content/plugins/woocommerce-avatax/includes/class-wc-avatax-order-handler.php(1119): apply_filters('woocommerce_cus...', Array)
#3 /srv/htdocs/wp-content/plugins/woocommerce-avatax/includes/class-wc-avatax-order-handler.php(1068): WC_AvaTax_Order_Handler->get_taxable_address(Object(WC_Order))
#4 /srv/htdocs/wp-content/plugins/woocommerce-avatax/includes/integrations/class-wc-avatax-integrations.php(146): WC_AvaTax_Order_Handler->is_order_taxable(Object(WC_Order))
#5 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(287): WC_AvaTax_Integrations->recalculate_renewal_taxes(Object(WC_Order), Object(WC_Subscription))
#6 /wordpress/core/5.5.3/wp-includes/plugin.php(206): WP_Hook->apply_filters(Object(WC_Order), Array)
#7 /srv/htdocs/wp-content/plugins/woocommerce-subscriptions/includes/wcs-renewal-functions.php(38): apply_filters('wcs_renewal_ord...', Object(WC_Order), Object(WC_Subscription))
#8 /srv/htdocs/wp-content/plugins/woocommerce-subscriptions/includes/class-wc-subscriptions-manager.php(116): wcs_create_renewal_order(Object(WC_Subscription))
#9 /srv/htdocs/wp-content/plugins/woocommerce-subscriptions/includes/class-wc-subscriptions-manager.php(89): WC_Subscriptions_Manager::process_renewal(3205, 'active', 'Subscription re...')
#10 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(287): WC_Subscriptions_Manager::prepare_renewal(3205)
#11 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#12 /wordpress/core/5.5.3/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#13 /srv/htdocs/wp-content/plugins/woocommerce-subscriptions/includes/admin/class-wcs-admin-meta-boxes.php(189): do_action('woocommerce_sch...', 3205)
#14 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(287): WCS_Admin_Meta_Boxes::process_renewal_action_request(Object(WC_Subscription))
#15 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#16 /wordpress/core/5.5.3/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#17 /srv/htdocs/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-actions.php(137): do_action('woocommerce_ord...', Object(WC_Subscription))
#18 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(287): WC_Meta_Box_Order_Actions::save(3205, Object(WP_Post))
#19 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#20 /wordpress/core/5.5.3/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#21 /srv/htdocs/wp-content/plugins/woocommerce/includes/admin/class-wc-admin-meta-boxes.php(220): do_action('woocommerce_pro...', 3205, Object(WP_Post))
#22 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(289): WC_Admin_Meta_Boxes->save_meta_boxes(3205, Object(WP_Post))
#23 /wordpress/core/5.5.3/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array)
#24 /wordpress/core/5.5.3/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#25 /wordpress/core/5.5.3/wp-includes/post.php(4260): do_action('save_post', 3205, Object(WP_Post), true)
#26 /wordpress/core/5.5.3/wp-includes/post.php(4354): wp_insert_post(Array, false)
#27 /wordpress/core/5.5.3/wp-admin/includes/post.php(419): wp_update_post(Array)
#28 /wordpress/core/5.5.3/wp-admin/post.php(227): edit_post()
#29 {main}
thrown in /srv/htdocs/wp-content/plugins/woocommerce-services/classes/class-wc-connect-taxjar-integration.php on line 781
```

System Status

```
### WordPress Environment ###

WC Version: 4.6.1
REST API Version: ✔ 4.6.1
WC Blocks Version: ✔ 3.4.0
Action Scheduler Version: ✔ 3.1.6
WC Admin Version: ✔ 1.6.2
Log Directory Writable: ✔
WP Version: 5.5.3
WP Multisite: –
WP Memory Limit: 256 MB
WP Debug Mode: ✔
WP Cron: ✔
Language: en_US
External object cache: ✔

### Server Environment ###

Server Info: nginx
PHP Version: 7.3.23
PHP Post Max Size: 2 GB
PHP Time Limit: 1200
PHP Max Input Vars: 6144
cURL Version: 7.72.0
OpenSSL/1.1.1d

SUHOSIN Installed: –
MySQL Version: 5.5.5-10.3.23-MariaDB-log
Max Upload Size: 2 GB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

WC Database Version: 4.6.1
WC Database Prefix: wp_
Total Database Size: 31.17MB
Database Data Size: 21.34MB
Database Index Size: 9.83MB
wp_woocommerce_sessions: Data: 0.05MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_api_keys: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_attribute_taxonomies: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_downloadable_product_permissions: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_order_items: Data: 0.06MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_order_itemmeta: Data: 0.31MB + Index: 0.27MB + Engine InnoDB
wp_woocommerce_tax_rates: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_tax_rate_locations: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_shipping_zones: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_shipping_zone_locations: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_shipping_zone_methods: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_payment_tokens: Data: 0.06MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_payment_tokenmeta: Data: 0.09MB + Index: 0.11MB + Engine InnoDB
wp_woocommerce_log: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_actions: Data: 2.02MB + Index: 1.00MB + Engine InnoDB
wp_actionscheduler_claims: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_groups: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_actionscheduler_logs: Data: 2.22MB + Index: 1.72MB + Engine InnoDB
wp_auctions_for_woocommerce_log: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_automatewoo_abandoned_carts: Data: 0.02MB + Index: 0.08MB + Engine InnoDB
wp_automatewoo_customers: Data: 0.02MB + Index: 0.09MB + Engine InnoDB
wp_automatewoo_customer_meta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_automatewoo_events: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_automatewoo_guests: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_automatewoo_guest_meta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_automatewoo_logs: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_automatewoo_log_meta: Data: 0.05MB + Index: 0.03MB + Engine InnoDB
wp_automatewoo_queue: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_automatewoo_queue_meta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_commentmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_comments: Data: 0.13MB + Index: 0.09MB + Engine InnoDB
wp_followup_coupons: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_coupon_logs: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_followup_customers: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_followup_customer_carts: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_customer_notes: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_customer_orders: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_followup_email_excludes: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_followup_email_logs: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_followup_email_orders: Data: 0.08MB + Index: 0.09MB + Engine InnoDB
wp_followup_email_tracking: Data: 0.02MB + Index: 0.08MB + Engine InnoDB
wp_followup_followup_history: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_followup_order_categories: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_order_items: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_followup_subscribers: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_subscribers_to_lists: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_followup_subscriber_lists: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_draft_submissions: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_gf_entry: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_entry_meta: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_gf_entry_notes: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_form: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_gf_form_meta: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_gf_form_revisions: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_gf_form_view: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_links: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_ms_snippets: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_options: Data: 2.03MB + Index: 0.16MB + Engine InnoDB
wp_pmxi_files: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_hash: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_history: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_images: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_imports: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_posts: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_pmxi_templates: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_postmeta: Data: 3.50MB + Index: 1.98MB + Engine InnoDB
wp_posts: Data: 2.22MB + Index: 0.22MB + Engine InnoDB
wp_snippets: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_termmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_terms: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_term_relationships: Data: 0.06MB + Index: 0.02MB + Engine InnoDB
wp_term_taxonomy: Data: 0.08MB + Index: 0.03MB + Engine InnoDB
wp_usermeta: Data: 0.06MB + Index: 0.06MB + Engine InnoDB
wp_users: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_wcpv_commissions: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wcpv_per_product_shipping_rules: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wcrp_rental_products_rentals: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_admin_notes: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_admin_note_actions: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_bookings_availability: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_bookings_availabilitymeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_booking_relationships: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_category_lookup: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_customer_lookup: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_deposits_payment_plans: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_deposits_payment_plans_schedule: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_download_log: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_order_coupon_lookup: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_order_product_lookup: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_wc_order_stats: Data: 0.05MB + Index: 0.05MB + Engine InnoDB
wp_wc_order_tax_lookup: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_points_rewards_user_points: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_wc_points_rewards_user_points_log: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_wc_product_meta_lookup: Data: 0.05MB + Index: 0.09MB + Engine InnoDB
wp_wc_reserved_stock: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wc_tax_rate_classes: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wc_warranty_products: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_wc_webhooks: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_bundled_itemmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_bundled_items: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_exported_csv_items: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_gc_activity: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_gc_cards: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_mywhishlist: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_pickup_locations_geodata: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_woocommerce_prl_deploymentmeta: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_prl_deployments: Data: 0.02MB + Index: 0.06MB + Engine InnoDB
wp_woocommerce_prl_frequencies: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_woocommerce_prl_tracking_clicks: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_woocommerce_prl_tracking_conversions: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_woocommerce_prl_tracking_views: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_woocommerce_shipping_table_rates: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_woocommerce_square_customers: Data: 0.02MB + Index: 0.00MB + Engine InnoDB
wp_wpml_mails: Data: 5.52MB + Index: 0.00MB + Engine InnoDB
wp_wps_hit: Data: 0.02MB + Index: 0.14MB + Engine InnoDB
wp_wps_index: Data: 0.33MB + Index: 0.48MB + Engine InnoDB
wp_wps_key: Data: 0.05MB + Index: 0.02MB + Engine InnoDB
wp_wps_object_term: Data: 0.05MB + Index: 0.09MB + Engine InnoDB
wp_wps_object_type: Data: 0.02MB + Index: 0.08MB + Engine InnoDB
wp_wps_query: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wps_uri: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_wps_user_agent: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_yith_wcwl: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_yith_wcwl_lists: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_yoast_indexable: Data: 0.13MB + Index: 0.11MB + Engine InnoDB
wp_yoast_indexable_hierarchy: Data: 0.02MB + Index: 0.05MB + Engine InnoDB
wp_yoast_migrations: Data: 0.02MB + Index: 0.02MB + Engine InnoDB
wp_yoast_primary_term: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_yoast_seo_links: Data: 0.02MB + Index: 0.03MB + Engine InnoDB
wp_yoast_seo_meta: Data: 0.02MB + Index: 0.00MB + Engine InnoDB

### Post Type Counts ###

amp_validated_url: 3
attachment: 42
aw_workflow: 13
bookable_resource: 8
csp_rules: 1
customize_changeset: 24
custom_css: 1
elementor_library: 1
event_ticket: 2
feedback: 5
follow_up_email: 1
global_product_addon: 1
jetpack_migration: 2
jp_img_sitemap: 1
jp_pay_product: 2
jp_sitemap: 1
jp_sitemap_master: 1
nav_menu_item: 6
page: 45
post: 88
prl_engine: 1
product: 153
product_variation: 205
revision: 94
shop_coupon: 58
shop_order: 194
shop_subscription: 28
wcpf_item: 8
wcpf_project: 2
wcpt: 1
wc_booking: 20
wc_membership_plan: 4
wc_pickup_location: 1
wc_user_membership: 1

### Security ###

Secure connection (HTTPS): ✔
Hide errors from visitors: ✔

### Active Plugins (7) ###

Akismet Anti-Spam: by Automattic – 4.1.7
Jetpack by WordPress.com: by Automattic – 9.0.2
User Role Editor: by Vladimir Garagulya – 4.56.1
WooCommerce AvaTax: by SkyVerge – 1.10.5 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Shipping & Tax: by Automattic – 1.25.1 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Subscriptions: by WooCommerce – 3.0.9 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce: by Automattic – 4.6.1

### Inactive Plugins (82) ###

AMP: by AMP Project Contributors – 2.0.4
AutomateWoo: by WooCommerce – 5.1.1
AutomateWoo - Subscriptions Add-on: by WooCommerce – 1.2.1 – Installed version not tested with active version of WooCommerce 4.6.1
Bookings Helper: by WooCommerce – 1.0.3 – Installed version not tested with active version of WooCommerce 4.6.1
Classic Editor: by WordPress Contributors – 1.6
Code Snippets: by Code Snippets Pro – 2.14.0
Coming Soon Page, Maintenance Mode & Landing Pages by SeedProd: by SeedProd – 6.0.8.4
Enable jQuery Migrate Helper: by The WordPress Team – 1.1.0
Featured Listing for Product Vendors: by WooCommerce – 1.0.0 – Installed version not tested with active version of WooCommerce 4.6.1
Gravity Forms: by Gravity Forms – 2.4.20
Gutenberg: by Gutenberg Team – 9.2.2
Health Check & Troubleshooting: by The WordPress.org community – 1.4.5
Homepage Control: by WooThemes – 2.0.3
Layout Grid: by Automattic – 1.3
Loco Translate: by Tim Whitlock – 2.4.4
Page Optimize: by Automattic – 0.5.1
Product Brands for WooCommerce: by WP1 – 1.0.0 – Installed version not tested with active version of WooCommerce 4.6.1
Product Filters for WooCommerce: by WooCommerce – 1.2.2 (update to version 1.2.3 is available) – Installed version not tested with active version of WooCommerce 4.6.1
Product Importer: by Nxtal – 1.0.1 – Installed version not tested with active version of WooCommerce 4.6.1
Query Monitor: by John Blackbourn – 3.6.4
Role Based Pricing for WooCommerce: by Addify – 1.5.0 – Installed version not tested with active version of WooCommerce 4.6.1
Storefront Blog Customiser: by WooCommerce – 1.3.0
Storefront Mega Menus: by WooCommerce – 1.6.2 – Installed version not tested with active version of WooCommerce 4.6.1
Storefront Powerpack: by WooCommerce – 1.5.0
Wholesale For WooCommerce: by wpexpertsio – 1.3.4 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce - ShipStation Integration: by WooCommerce – 4.1.39 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Accommodation Bookings: by WooCommerce – 1.1.22
WooCommerce Additional Variation Images: by WooCommerce – 1.7.24 (update to version 1.7.26 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Advanced Ajax Layered Navigation: by WooCommerce – 1.4.26 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce All Products For Subscriptions: by SomewhereWarm – 3.1.18
WooCommerce Blocks: by Automattic – 3.7.0
WooCommerce Bookings: by WooCommerce – 1.15.26 (update to version 1.15.29 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Bookings Availability: by WooCommerce – 1.1.15 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Box Office: by WooCommerce – 1.1.29 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Brands: by WooCommerce – 1.6.20 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Checkout Field Editor: by WooCommerce – 1.5.36 (update to version 1.5.37 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Composite Products: by SomewhereWarm – 7.0.6 (update to version 7.1.1 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Conditional Shipping and Payments: by SomewhereWarm – 1.8.6
WooCommerce Customer/Order/Coupon CSV Import Suite: by SkyVerge – 3.9.0 (update to version 3.9.1 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Customer/Order/Coupon Export: by SkyVerge – 5.0.13 (update to version 5.1.2 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Deposits: by WooCommerce – 1.5.5 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Distance Rate Shipping: by Automattic – 1.0.26 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Dynamic Pricing: by Lucas Stark – 3.1.21 (update to version 3.1.22 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce FedEx Shipping: by WooCommerce – 3.4.32 (update to version 3.4.33 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Gift Cards: by SomewhereWarm – 1.5.1
WooCommerce Gravity Forms Product Add-Ons: by Lucas Stark – 3.3.15 (update to version 3.3.16 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Local Pickup Plus: by SkyVerge – 2.8.2 (update to version 2.9.2 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Memberships: by SkyVerge – 1.18.0 (update to version 1.19.2 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Min/Max Quantities: by WooCommerce – 2.4.19 (update to version 2.4.20 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Mix and Match Products: by Kathy Darling – 1.9.11 (update to version 1.10.4 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce One Page Checkout: by Automattic – 1.7.9 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Payments: by Automattic – 1.6.0
WooCommerce Payments Dev Tools: by Automattic – – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce PayPal Checkout Gateway: by WooCommerce – 2.1.0 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Points and Rewards: by WooCommerce – 1.6.37 (update to version 1.6.39 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Pre-Orders: by WooCommerce – 1.5.28 (update to version 1.5.29 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Product Add-ons: by WooCommerce – 3.1.0 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Product Bundles: by SomewhereWarm – 6.4.1 (update to version 6.4.2 is available)
WooCommerce Product CSV Import Suite: by WooCommerce – 1.10.36 (update to version 1.10.37 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Product Finder: by WooCommerce – 1.2.16 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Product Vendors: by WooCommerce – 2.1.43 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Royal Mail: by WooCommerce – 2.5.31 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Shipment Tracking: by WooCommerce – 1.6.26 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Smart Coupons: by StoreApps – 4.8.0 (update to version 4.12.0 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Square: by WooCommerce – 2.2.4
WooCommerce Stamps.com API integration: by WooCommerce – 1.3.20 (update to version 1.3.21 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Store Credit: by Themesquad – 3.2.2 (update to version 3.3.0 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Stripe Gateway: by WooCommerce – 4.5.3 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Subscriptions CSV Importer and Exporter: by Prospress Inc – 2.1.0 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Subscriptions Gifting: by WooCommerce – 2.1.1 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Table Rate Shipping: by WooCommerce – 3.0.29 (update to version 3.0.30 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce UPS Shipping: by WooCommerce – 3.2.29 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce USPS Shipping: by WooCommerce – 4.4.47 (update to version 4.4.48 is available) – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Variation Swatches and Photos: by Lucas Stark – 3.1.2 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce WishLists: by Lucas Stark – 2.2.2 – Installed version not tested with active version of WooCommerce 4.6.1
WooCommerce Xero Integration: by WooCommerce – 1.7.33 – Installed version not tested with active version of WooCommerce 4.6.1
WordPress.com Editing Toolkit: by Automattic – 2.8.3
WordPress Importer: by wordpressdotorg – 0.7
WordPress Version Info: by alpipego – 1.2.1
WP All Import: by Soflyy – 3.5.6
WP Crontrol: by John Blackbourn & crontributors – 1.8.5
WP Mail Logging: by MailPoet – 1.9.7

### Dropin Plugins (2) ###

advanced-cache.php: advanced-cache.php
object-cache.php: Memcached

### Must Use Plugins (2) ###

Health Check Troubleshooting Mode: by – 1.7.2
WP.com Site Helper: by –

### Settings ###

API Enabled: –
Force SSL: –
Currency: USD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2
Taxonomies: Product Types: accommodation-booking (accommodation-booking)
auction (auction)
booking (booking)
bundle (bundle)
composite (composite)
external (external)
grouped (grouped)
mix and match (mix-and-match)
paywall (paywall)
simple (simple)
subscription (subscription)
variable (variable)
variable subscription (variable-subscription)
variation (variation)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

Connected to WooCommerce.com: ✔

### WC Pages ###

Shop base: #16 - /shop/
Cart: #17 - /cart/
Checkout: #18 - /checkout/
My account: #19 - /my-account/
Terms and conditions: #576 - /terms-and-conditions/

### Theme ###

Name: Storefront
Version: 2.8.0
Author URL: https://woocommerce.com/
Child Theme: ❌ – If you are modifying WooCommerce on a parent theme that you did not build personally we recommend using a child theme. See: How to create a child theme
WooCommerce Support: ✔

### Templates ###

Overrides: –

### Subscriptions ###

WCS_DEBUG: ✔ No
Subscriptions Mode: ✔ Live
Subscriptions Live URL: https://storetijosh5647382910.blog
Subscription Statuses: wc-active: 6
wc-expired: 1
wc-pending-cancel: 2
wc-pending: 1
wc-on-hold: 15
wc-cancelled: 3

WooCommerce Account Connected: ✔ Yes
Active Product Key: ❌ No
Report Cache Enabled: ✔ Yes
Cache Update Failures: ✔ 0 failure

### Store Setup ###

Country / State: United States (US) — Idaho

### Subscriptions by Payment Gateway ###

Cash on delivery: wc-on-hold: 1
other: wc-active: 3
wc-cancelled: 1
wc-on-hold: 3
wc-pending-cancel: 1
wc-cancelled: 2
wc-on-hold: 8
wc-pending-cancel: 1

### Payment Gateway Support ###

Cash on delivery: products

### Action Scheduler ###

Canceled: 6
Oldest: -0001-11-30 00:00:00 +0000
Newest: -0001-11-30 00:00:00 +0000

Complete: 3,275
Oldest: 2020-10-05 06:00:35 +0000
Newest: 2020-11-05 03:17:05 +0000

Failed: 216
Oldest: 2020-09-02 21:30:44 +0000
Newest: 2020-10-16 18:38:28 +0000

Pending: 23
Oldest: 2020-11-05 03:17:12 +0000
Newest: 2020-11-30 16:31:46 +0000

```

Start at classes/class-wc-connect-taxjar-integration.php:781, then trace the renewal path through includes/class-wc-avatax-order-handler.php and includes/wcs-renewal-functions.php. Reproduce the failure with automated taxes and AvaTax enabled, and confirm that processing a subscription renewal completes without a critical error and leaves the renewal order in the expected state.

Written by the indexing model from the issue text.