Connection to gitlab closed by remote host error message when pushing new created branch

Whenever I try to push my newly created branch I get this error message “Connection to gitlab closed by remote”. I tried to push from SourceTree and GitDesktop but same error. I don’t think it’s a connection issue since other repos work fine. Could it be something with SSH Key? If yes how can I fix it please

Do you receive the same failure with a standard Git CLI push command too? If this only began occurring recently (i.e. after it worked for a while), ensure the SSH keys are still un-expired on the user profile, and try using a recommended crypto algorithm: GitLab and SSH keys | GitLab