<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Work on this issue](https://contributors.gitlab.com/manage-issue?action=work&projectId=278964&issueIid=407870) - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=407870) </details> <!--IssueSummary end--> ### Description We should provide custom UX pages for better UX experiencing when user is trying to access - a workspace which is starting/stopped/stopping/restarting/terminating - a port in the workspace which is not exposed Questions - Should we show a 404 page when a user is trying to access a workspace they are not authorized to? This is what Pages does. However, does it make sense in our case?