You are working on the SUSE-Enceladus/img-proof repository. The source code is checked out at /testbed at…

You are working on the SUSE-Enceladus/img-proof repository. The source code is checked out at /testbed at…: a task in SWE-Lego-RL-2699 (Harbor dataset). It would be helpful to provide a better exception message explaining that a region is required.