Error 500 when accessing charts with anonymous user
https://sentry.gitlab.net/gitlab/gitlabcom/issues/698870/
NoMethodError: undefined method `id' for nil:NilClass
projects/repository_languages_service.rb:14:in `perform_language_detection'
::DetectRepositoryLanguagesWorker.perform_async(project.id, current_user.id)
gitlab/metrics/instrumentation.rb:161:in `block in perform_language_detection'
.measure { super }
gitlab/metrics/method_call.rb:36:in `measure'
retval = yield
gitlab/metrics/instrumentation.rb:161:in `perform_language_detection'
.measure { super }
projects/repository_languages_service.rb:6:in `execute'
perform_language_detection unless project.detected_repository_languages?
...
(135 additional frame(s) were not displayed)
NoMethodError: undefined method `id' for nil:NilClass