BAD RESPONSE STATUS (404)

When trying to deploy static HTML to S3, this error shows.

BAD RESPONSE STATUS (404): /%e7%84%a1%e9%a1%8c%e3%81%ae%e5%86%8d%e5%88%a9%e7%94%a8%e3%83%96%e3%83%ad%e3%83%83%e3%82%af-2/
BAD RESPONSE STATUS (404): /%e7%84%a1%e9%a1%8c%e3%81%ae%e5%86%8d%e5%88%a9%e7%94%a8%e3%83%96%e3%83%ad%e3%83%83%e3%82%af/
BAD RESPONSE STATUS (404): /ads.txt
BAD RESPONSE STATUS (404): /mh-magazine-lite/
BAD RESPONSE STATUS (404): /wp-global-styles-mh-magazine-lite/
BAD RESPONSE STATUS (400): /wp-json/oembed/1.0/embed
BAD RESPONSE STATUS FROM API (403)
Deployment: error encountered
/var/www/html/wp-content/uploads/static-html-output/20230530テストタイトル/index.html
StaticHTMLOutput\StaticHTMLOutputException: BAD RESPONSE STATUS FROM API (403) in /var/www/html/wp-content/plugins/static-html-output-plugin/src/SitePublisher.php:297
Stack trace:
#0 /var/www/html/wp-content/plugins/static-html-output-plugin/src/S3.php(258): StaticHTMLOutput\SitePublisher->checkForValidResponses(403, Array)
#1 /var/www/html/wp-content/plugins/static-html-output-plugin/src/S3.php(98): StaticHTMLOutput\S3->put_s3_object('20230530\xE3\x83\x86\xE3\x82\xB9\xE3...', '...', 'text/html')
#2 /var/www/html/wp-content/plugins/static-html-output-plugin/static-html-output-plugin.php(280): StaticHTMLOutput\S3->upload_files()
#3 /var/www/html/wp-includes/class-wp-hook.php(324): static_html_output_ajax('')
#4 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#5 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#6 /var/www/html/wp-admin/admin-ajax.php(188): do_action('wp_ajax_wp_stat...')
#7 {main}

Static HTML Output Version: 6.6.21
Wordpress Version: 6.4.2

tried testing s3 connection and connection was successful.

Has somebody encountered the same error?
Your help is very much appreciated.

Thanks