wrong value in formating an error message

TES/tes/apiendpoints.py

@@ -225,7 +225,7 @@ class JobStat(Resource):
             logger.error(e)
             flask_restful.abort(400, message="Identity error {}".format(e))
         except SshCtrlException as e:
-            flask_restful.abort(400,message="We're having difficultly contacting {}. Could there be an outage in effect?".format(params['identity']['site']['host']))
+            flask_restful.abort(400,message="We're having difficultly contacting {}. Could there be an outage in effect?".format(host))
         if not (res['stderr'] == '' or res['stderr'] is None or res['stderr'] == b''):
             logger.error(res['stderr'])
             flask_restful.abort(400, message=res['stderr'].decode())