Issues search ends on error 500

Summary

A lot of queries on gitlab.com ends on error 500 when logged in.

Steps to reproduce

This shows error 500 when I am logged in. In anonymous window it loads.

https://gitlab.com/gitlab-org/gitlab/-/issues?scope=all&utf8=✓&state=opened&search=This+variable+does+not+match!

What is the current bug behavior?

Error 500

What is the expected correct behavior?

Page loads

Relevant logs and/or screenshots

Snímek_obrazovky_2020-06-03_v_12.29.18

Output of checks

This bug happens on GitLab.com