500 error on /admin/audit_events on GitLab.com

Summary

Visiting https://gitlab.com/admin/audit_events on GitLab.com results in a 500 error.

Relevant logs and/or screenshots

This possibly related error in sentry: https://sentry.gitlab.net/gitlab/gitlabcom/issues/824080/?query=is:unresolved%20audit_events

Output of checks

This bug happens on GitLab.com.

Possible fixes

Probably similar to the fixes made for when the main /admin page wouldn't load.