Update app.py

app.py

@@ -134,7 +134,7 @@ def save_data_and_sendmail(results_dict,sen_list,results):
         x = requests.post(url, json = myobj) 
             
     except Exception as e:
-        return "Error while sending mail" + e
+        return "Error while sending mail" + str(e)
         
     return "Successfully save data"