With this error message Gerrit rejects to push a commit if the git repository to which the push is done does not exist as a project in the Gerrit server or if the pushing user has no read access for this project.
The name of the project in Gerrit has the same name as the path of its git repository (excluding the .git extension).
If you are facing this problem, do the following:
Verify that the project name specified as git repository in the push command is typed correctly (case sensitive).
Verify that you are pushing to the correct Gerrit server.
Go in the Gerrit WebUI to Admin → Projects and check that the project is listed. If the project is not listed the project either does not exist or you don’t have Read access for it. This means if you certain that the project name is right you should contact the Gerrit Administrator or project owner to request access to the project.
This error message might be misleading if the project actually exists but the push is failing because the pushing user has no read access for the project. The reason that Gerrit in this case denies the existence of the project is to prevent users from probing the Gerrit server to see if a particular project exists.
Part of Gerrit Error Messages