fix up exception to not crash with further unset variables

pa_job_manager.py

@@ -764,7 +764,7 @@ def MoveFileToNewFolderInStorage(job,move_me, dst_storage_path, dst_rel_path):
         os.replace( src, dst )
         print( f"would mv {src} {dst}" )
     except Exception as e:
-        print( f"ERROR: Failed to move file to new location on filesystem - which={src}, location={dir}, err: {e}")
+        print( f"ERROR: Failed to move file to new location on filesystem, err: {e}")
 
     # need these for AddDir calls below to work
     parent_dir=session.query(Dir).join(PathDirLink).filter(PathDirLink.path_id==dst_storage_path.id).first()