Slack模式显示错误 "We had some trouble connecting. 再试一次？

Question

我试图用下面的代码更新模式，但它给我所有正确的输出。除了在顶部显示错误 We had some trouble connecting. Try again?我找不到代码的任何问题。谁能帮帮我？

    payload1 =json.loads(message_from_slack["payload"])
    text = {
              "type": "modal",
              "callback_id": "modal-identifier",
              "title": {
                "type": "plain_text",
                "text": "Just a modal"
              },
              "blocks": [
                {
                  "type": "section",
                  "block_id": "section-identifier",
                  "text": {
                    "type": "mrkdwn",
                    "text": "*Welcome* to ~my~ Block Kit _modal_!"
                  },
                  "accessory": {
                    "type": "button",
                    "text": {
                      "type": "plain_text",
                      "text": "Just a button",
                    },
                    "action_id": "button-identifier",
                  }
                }
              ],
            }
    return requests.post("https://slack.com/api/views.update", {
        'token': "",
          "view_id": payload1['view']['id'],
          "hash": payload1['view']['hash'],
          "view": str(text),
          'statusCode': 200
        }).json()