使用 ngrok 部署烧瓶应用程序时出现错误索引

Question

我使用 Flask 创建了一个服务器来演示我的 ML 模型。我在 Google Colab 上运行它并使用 flask-ngrok 进行隧道。它工作正常，但今天突然停止工作并显示此错误：

=> loading checkpoint './semi_supervised_model_3/ckpt_epoch_10.00.pth'
=> loaded checkpoint './semi_supervised_model_3/ckpt_epoch_10.00.pth' (epoch 10.0)
 * Serving Flask app "demo_Server" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 1182, in run
    self.function(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.6/dist-packages/flask_ngrok.py", line 70, in start_ngrok
    ngrok_address = _run_ngrok()
  File "/usr/local/lib/python3.6/dist-packages/flask_ngrok.py", line 38, in _run_ngrok
    tunnel_url = j['tunnels'][0]['public_url']  # Do the parsing of the get
IndexError: list index out of range

这个错误是什么意思？为什么即使我什么都没改变，它也来了？

Answer 1

当我终止当前会话时，我的问题得到了解决。在新会话中，我重新安装了 flask-ngrok，它运行良好。