Not working for me

[INGourav]

root@829e3edc10af:/opt# FLASK_APP=app.py flask run --host=0.0.0.0

• Serving Flask app 'app.py' (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 Traceback (most recent call last): File "/usr/local/bin/flask", line 8, in sys.exit(main()) File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 990, in main
  cli.main(args=sys.argv[1:]) File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 596, in main
  return super().main(*args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1062, in main
  rv = self.invoke(ctx) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1668, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1404, in invoke return ctx.invoke(self.callback, **ctx.params) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 763, in invoke return __callback(*args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/click/decorators.py", line 84, in new_func return ctx.invoke(f, obj, *args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 763, in invoke return __callback(*args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 845, in run_command app = DispatchingApp(info.load_app, use_eager_loading=eager_loading) File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 321, in init self._load_unlocked() File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 346, in _load_unlocked self._app = rv = self.loader() File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 402, in load_app app = locate_app(self, import_name, name) File "/usr/local/lib/python3.8/dist-packages/flask/cli.py", line 256, in locate_app import(module_name) File "/opt/app.py", line 9 @app.route('/how are you') ^ IndentationError: unindent does not match any outer indentation level

[sreelekshmi-Raj]

@INGourav Please try this solution $ export FLASK_DEBUG=1 $ export FLASK_APP=app.py $ export FLASK_ENV=development Then start web server using $ python3 -m flask run --host=0.0.0.0