Slack Application - "Remove" button redirects to 404

Summary

When attempting to remove the Slack Application via the GitLab UI, users are redirected to a 404 error page.

NOTE: Removing the Slack Application via the Slack App Directory does not remove it from the GitLab UI.

Steps to reproduce

  1. Add the Slack Application via the GitLab UI (Settings > Integration > Slack application)
  2. Attempt to remove the Slack Application by clicking Remove (Settings > Integration > Slack application > Remove)
  3. Observe redirect to 404 error page

What is the current bug behavior?

When attempting to remove the Slack Application, users are redirect to a 404 error page.

What is the expected correct behavior?

When attempting to remove the Slack Application, the application should be successfully removed from the project integration page.

Relevant logs and/or screenshots

  • Rails Logs
    • json.action: route_not_found, json.status: 404

Screen_Shot_2021-07-12_at_1.11.17_PM Screen_Shot_2021-07-12_at_1.10.23_PM

Output of checks

This bug happens on GitLab.com