每当我想运行烧瓶时，即使没有打开任何浏览器，也会显示以下错误

Question

我想要以下错误的解决方案：(venflask) sgiri@sgiri-Latitude-3580:~/NewEnv$ flask run * Environment: production   WARNING: This is a development server. Do not use it in a production deployment.   Use a production WSGI server instead. * Debug mode: offTraceback (most recent call last):  File "/home/sgiri/NewEnv/venflask/bin/flask", line 10, in <module>    sys.exit(main())  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/flask/cli.py", line 966, in main    cli.main(prog_name="python -m flask" if as_module else None)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/flask/cli.py", line 586, in main    return super(FlaskGroup, self).main(*args, **kwargs)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/core.py", line 717, in main    rv = self.invoke(ctx)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/core.py", line 1137, in invoke    return _process_result(sub_ctx.command.invoke(sub_ctx))  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/core.py", line 956, in invoke    return ctx.invoke(self.callback, **ctx.params)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/core.py", line 555, in invoke    return callback(*args, **kwargs)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/decorators.py", line 64, in new_func    return ctx.invoke(f, obj, *args, **kwargs)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/click/core.py", line 555, in invoke    return callback(*args, **kwargs)  File "/home/sgiri/NewEnv/venflask/lib/python3.8/site-packages/flask/cli.py", line 852, in run_command    run_simple(

Answer 1

您再次使用 Flask 应用程序的端口。这就是发生此错误的原因。您可以停止项目并从编辑器中再次运行它。

此外，这对您也不起作用，那么您可以使用以下命令：

 lsof -i:<port_number>

 kill -9 <pid>