With this error message Gerrit rejects to push a commit or submit a review label (approval) to a change that is already closed.
When Pushing a Commit
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 recommended 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 Web UI (browse the abandoned change in the Gerrit Web UI and click on the 'Restore Change' button). Afterwards the push should succeed and a new patch set for this change will be created.
When Submitting a Review Label
This error occurs if you are trying to submit a review label (approval) using the ssh review command after the change has been closed. A change can be closed because it was submitted and merged, because it was abandoned, or because the patchset to which you are submitting the review has been replaced by a newer patchset.
Part of Gerrit Error Messages