we want to test the upgrade to the latest version in our test environment.
However when we try to restore the backup file from our production environment in this test environment we get the error: Unable to restore database : Unexpected end of ZLIB input stream.

Even when we shutdown the production environment and then make a backup-file, the restore of this file in the test-environment gives the same error.

Is there a problem with the backup or is our environment-database corrupt ?