With this error message Gerrit rejects to push a commit to a change that is already closed.
This error occurs if you are trying to push a commit that contains the Change-Id of a closed change in its commit message. A change can be closed either because it was already submitted and merged or because it was abandoned.
If the change for which you wanted to upload a new patch set was already submitted and merged you may want to push your commit as a new change. To do this you have to remove the Change-Id from the commit message as explained here and ideally generate a new Change-Id using the commit hook or EGit. Before pushing again it is also recommendable to do a git rebase to base your commit on the submitted change. Pushing again should now create a new change in Gerrit.
If the change for which you wanted to upload a new patch set was abandoned and your new changes overcome the reasons for abandoning this change you may want to restore the change in the Gerrit WebUI (browse the abandoned change in the Gerrit WebUI and click on the Restore Change button). Afterwards the push should succeed and a new patch set for this change will be created.
Part of Gerrit Error Messages