set the error code when parameters on the HPC server fail

TES/tes/apiendpoints.py

@@ -409,6 +409,8 @@ class AppInstance(Resource):
             logger.error(traceback.format_exc())
         try:
             data = json.loads(res['stdout'].decode())
+            if 'error' in data:
+                return data, 400
             return data
         except json.decoder.JSONDecodeError as e:
             logger.error(res['stderr']+res['stdout'])