'flask' is not recognized as an internal or external command code example

Example: 'flask' is not recognized as an internal or external command, operable program or batch file.

set PATH=C:\Users\YOUR_USER_NAME\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\Scripts