UserMailer：Class的未定义方法`email_verification'

问题描述

即使我们的代码库中不存在email_verification，也遇到此错误。这是堆栈跟踪：

NoMethodError: undefined method `email_verification' for UserMailer:Class
  from action_mailer/base.rb:582:in `method_missing'
  from action_mailer/delivery_job.rb:16:in `public_send'
  from action_mailer/delivery_job.rb:16:in `perform'
  from active_job/execution.rb:39:in `block in perform_Now'
  from active_support/callbacks.rb:109:in `block in run_callbacks'
  from raven/integrations/rails/active_job.rb:18:in `capture_and_reraise_with_sentry'
  from raven/integrations/rails/active_job.rb:12:in `block (2 levels) in included'
  from active_support/callbacks.rb:118:in `instance_exec'
  from active_support/callbacks.rb:118:in `block in run_callbacks'
  from new_relic/agent/instrumentation/active_job.rb:53:in `perform'
  from new_relic/agent/instrumentation/active_job.rb:23:in `block (4 levels) in <main>'
  from active_support/callbacks.rb:118:in `instance_exec'
  from active_support/callbacks.rb:118:in `block in run_callbacks'
  from i18n.rb:313:in `with_locale'
  from active_job/translation.rb:9:in `block (2 levels) in <module:Translation>'
  from active_support/callbacks.rb:118:in `instance_exec'
  from active_support/callbacks.rb:118:in `block in run_callbacks'
  from active_job/logging.rb:26:in `block (4 levels) in <module:Logging>'
  from active_support/notifications.rb:168:in `block in instrument'
  from active_support/notifications/instrumenter.rb:23:in `instrument'
  from active_support/notifications.rb:168:in `instrument'
  from active_job/logging.rb:25:in `block (3 levels) in <module:Logging>'
  from active_job/logging.rb:46:in `block in tag_logger'
  from active_support/tagged_logging.rb:71:in `block in tagged'
  from active_support/tagged_logging.rb:28:in `tagged'
  from active_support/tagged_logging.rb:71:in `tagged'
  from active_job/logging.rb:46:in `tag_logger'
  from active_job/logging.rb:22:in `block (2 levels) in <module:Logging>'
  from active_support/callbacks.rb:118:in `instance_exec'
  from active_support/callbacks.rb:118:in `block in run_callbacks'
  from active_support/callbacks.rb:136:in `run_callbacks'
  from active_job/execution.rb:38:in `perform_Now'
  from active_job/execution.rb:24:in `block in execute'
  from active_support/callbacks.rb:109:in `block in run_callbacks'
  from active_job/railtie.rb:28:in `block (4 levels) in <class:Railtie>'
  from active_support/execution_wrapper.rb:87:in `wrap'
  from active_support/reloader.rb:73:in `block in wrap'
  from active_support/execution_wrapper.rb:83:in `wrap'
  from active_support/reloader.rb:72:in `wrap'
  from active_job/railtie.rb:27:in `block (3 levels) in <class:Railtie>'
  from active_support/callbacks.rb:118:in `instance_exec'
  from active_support/callbacks.rb:118:in `block in run_callbacks'
  from active_support/callbacks.rb:136:in `run_callbacks'
  from active_job/execution.rb:22:in `execute'
  from active_job/queue_adapters/sidekiq_adapter.rb:42:in `perform'
  from sidekiq/processor.rb:192:in `execute_job'
  from sidekiq/processor.rb:165:in `block (2 levels) in process'
  from sidekiq/middleware/chain.rb:128:in `block in invoke'
  from new_relic/agent/instrumentation/sidekiq.rb:33:in `block in call'
  from new_relic/agent/instrumentation/controller_instrumentation.rb:376:in `perform_action_with_newrelic_trace'
  from new_relic/agent/instrumentation/sidekiq.rb:29:in `call'
  from sidekiq/middleware/chain.rb:130:in `block in invoke'
  from raven/integrations/sidekiq.rb:9:in `call'
  from sidekiq/middleware/chain.rb:130:in `block in invoke'
  from sidekiq/middleware/chain.rb:133:in `invoke'
  from sidekiq/processor.rb:164:in `block in process'
  from sidekiq/processor.rb:137:in `block (6 levels) in dispatch'
  from sidekiq/job_retry.rb:109:in `local'
  from sidekiq/processor.rb:136:in `block (5 levels) in dispatch'
  from sidekiq/rails.rb:43:in `block in call'
  from active_support/execution_wrapper.rb:87:in `wrap'
  from active_support/reloader.rb:73:in `block in wrap'
  from active_support/execution_wrapper.rb:87:in `wrap'
  from active_support/reloader.rb:72:in `wrap'
  from sidekiq/rails.rb:42:in `call'
  from sidekiq/processor.rb:132:in `block (4 levels) in dispatch'
  from sidekiq/processor.rb:250:in `stats'
  from sidekiq/processor.rb:127:in `block (3 levels) in dispatch'
  from sidekiq/job_logger.rb:8:in `call'
  from sidekiq/processor.rb:126:in `block (2 levels) in dispatch'
  from sidekiq/job_retry.rb:74:in `global'
  from sidekiq/processor.rb:125:in `block in dispatch'
  from sidekiq/logging.rb:48:in `with_context'
  from sidekiq/logging.rb:42:in `with_job_hash_context'
  from sidekiq/processor.rb:124:in `dispatch'
  from sidekiq/processor.rb:163:in `process'
  from sidekiq/processor.rb:83:in `process_one'
  from sidekiq/processor.rb:71:in `run'
  from sidekiq/util.rb:16:in `watchdog'
  from sidekiq/util.rb:25:in `block in safe_thread'

未解决的Rails问题：https://github.com/rails/rails/issues/40607

解决方法

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