[Airbrake] [Production] undefined method `each' for nil:NilClass

**Airbrake error:** [#2535](https://herokuapp16263207herokucom.airbrake.io/projects/122010/groups/3082909785784952535)
**Airbrake project:** harrowcn-production

**Error type:** `NoMethodError`
**Error message:** `` undefined method `each' for nil:NilClass ``
**Where:** `rake#db:import_doit`
**Occurred at:** Aug 24, 2021 14:31:23 UTC
**First seen at:** Aug 24, 2021 14:31:23 UTC
**Occurrences:** 0 (0 since last deploy on ``)
**Severity:** `error`

**URL:** ``
**File:** `/PROJECT_ROOT/app/services/import_do_it_volunteer_opportunities.rb`

**Backtrace:**
```
/PROJECT_ROOT/app/services/import_do_it_volunteer_opportunities.rb:50:in persist_doit
/PROJECT_ROOT/app/services/import_do_it_volunteer_opportunities.rb:33:in process_doit_json_page
/PROJECT_ROOT/app/services/import_do_it_volunteer_opportunities.rb:27:in run
/PROJECT_ROOT/app/services/import_do_it_volunteer_opportunities.rb:7:in with
/PROJECT_ROOT/lib/tasks/import_doit.rake:5:in block (2 levels) in
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:273:in block in execute
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:273:in each
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:273:in execute
/GEM_ROOT/gems/airbrake-10.0.0/lib/airbrake/rake.rb:17:in execute
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:214:in block in invoke_with_call_chain
/PROJECT_ROOT/vendor/ruby-2.6.5/lib/ruby/2.6.0/monitor.rb:235:in mon_synchronize
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:194:in invoke_with_call_chain
/GEM_ROOT/gems/rake-12.3.3/lib/rake/task.rb:183:in invoke
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:160:in invoke_task
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:116:in block (2 levels) in top_level
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:116:in each
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:116:in block in top_level
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:125:in run_with_threads
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:110:in top_level
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:83:in block in run
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:186:in standard_exception_handling
/GEM_ROOT/gems/rake-12.3.3/lib/rake/application.rb:80:in run
/GEM_ROOT/gems/rake-12.3.3/exe/rake:27:in
/GEM_ROOT/bin/rake:23:in load
/GEM_ROOT/bin/rake:23:in
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in load
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:74:in kernel_load
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli/exec.rb:28:in run
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli.rb:463:in exec
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in run
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in invoke_command
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor.rb:387:in dispatch
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli.rb:27:in dispatch
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/vendor/thor/lib/thor/base.rb:466:in start
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/cli.rb:18:in start
/GEM_ROOT/gems/bundler-1.17.3/exe/bundle:30:in block in
/GEM_ROOT/gems/bundler-1.17.3/lib/bundler/friendly_errors.rb:124:in with_friendly_errors
/GEM_ROOT/gems/bundler-1.17.3/exe/bundle:22:in
/PROJECT_ROOT/vendor/bundle/bin/bundle:104:in load
/PROJECT_ROOT/vendor/bundle/bin/bundle:104:in
```
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