I recently deleted an existing project repository and even after refreshing and re-logging into my account I can still see the project on the Dashboard. When I click on the project I get a page with Error: 404.
How can I remove this project from my Dashboard?
It’s probably cached. i think the Redis cache gets cleared once a while, but if you want to you can use the following raketask to see if it helps:
sudo gitlab-rake cache:clear
Where do I run this command?
Sorry, I should have asked first. Is this on your installation or on GitLab.com?
Its GitLab.com
So this is still an issue? If so, can you open an issue in https://gitlab.com/gitlab-com/support-forum/issues?
Will do. Thank you 
Well problem solved now! If anyone is interested they can find the solution here - https://gitlab.com/gitlab-com/support-forum/issues/535#note_3746894
This got deleted, could you please share with me how you solved it ??
does the command affect other projects?