问题不是来自Flask，

The problem is not from Flask,

app.run(host='0.0.0.0')中指定的IP必须由您的服务器拥有.

The IP specified in app.run(host='0.0.0.0') must be owned by your server.

如果要在远程服务器上启动Flask，请使用SSH在该服务器上部署代码，然后使用远程会话运行它.

If you want to launch Flask on remote server, deploy the code on that server using SSH and run it using a remote session.