Update app.py

app.py

@@ -56,7 +56,7 @@ def greet(string):
   current_time = datetime.datetime.now()
   body = {
       "arguments": {"range": "Sheet1!C"+str(len(df)+2), "valueInputOption": "USER_ENTERED"},
-      "body": {"values": [[current_time ]]}
+      "body": {"values": [[str(current_time)]]}
   }
   res = requests.post(url, json.dumps(body), headers={'Content-Type': 'application/json'})
   #print(res.text)