Many Sidekiq exceptions
Summary
Since 06/18 16:52 UTC we get many exceptions from sidekiq workers on GitLab.com. This correlates with the deployment of 12.1.201906181223-ec198c44beb.8945326070f to gprd.
And it seems that we also saw this behavior 7 days before, but the exceptions stopped occurring on 06/13 16:00 UTC, when 12.1.201906130828-d56096df9a5.0f856585b73 was deployed.
Relevant logs and/or screenshots
