Видео ютуба по тегу Jinja2.Exceptions.undefinederror Is Undefined

PYTHON : Rendering template gives
PYTHON : Rendering template gives "jinja2.exceptions.UndefinedError: 'form' is undefined"
How to Fix jinja2.exceptions.UndefinedError in Flask Applications
How to Fix jinja2.exceptions.UndefinedError in Flask Applications
Resolving the jinja2.exceptions.UndefinedError with Flask and Jinja2
Resolving the jinja2.exceptions.UndefinedError with Flask and Jinja2
How to Fix jinja2.exceptions.UndefinedError: 'to_user' is undefined in Flask
How to Fix jinja2.exceptions.UndefinedError: 'to_user' is undefined in Flask
Resolving the jinja2.exceptions.UndefinedError: 'predictions' is undefined in Flask
Resolving the jinja2.exceptions.UndefinedError: 'predictions' is undefined in Flask