raise FactoryException('Unknown class <%s>' % name) kivy.factory.FactoryException: Unknown class <MDToolbar>

[huzefadatasci]

In 10 - toolbar / main.py

raise FactoryException('Unknown class <%s>' % name) kivy.factory.FactoryException: Unknown class

why this is happened??? as I used your repo as it is.

[schroedifer]

I had the same thing happen. I think MDToolbar was removed or renamed.

Try this:

from kivymd.uix.toolbar import MDTopAppBar

[DavidPesticcio]

You could always use the KivyMD version prior to the rename: pip install kivymd==0.104.2

As @schroedifer mentioned MDToolBar was renamed to MDTopAppBar in KivyMD v1.0.0 - See link for more details:

Rename MDToolbarr to MDTopAppBar class

Additionally, over indentation between kvlang blocks will also cause this rather unhelpful error.