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Question

it shows the function related to root url i.e. ('/') but if i write @app.route('/home') it gives me that error

Answer 1

Based on your clarifying comments, it appears your browser is accessing a previous version of your app server.

I have run into this problem myself when using the PyCharm IDE. On Windows, the way to shut down these old versions of the server is to press either Ctrl+Alt+Delete or Ctrl+Shift+Esc (Windows 10) to view your list of running processes. Then scroll down until you see processes named Python and shut them all down.

Answer 2

You should have written @app.route('/home/'). That fixed the problem for me!