'NoneType' has no attribute 'tell'

[Poikilos]

I added some debugging code on my end (See the related kivy issue linked below for that code) and this seems to be due to the fact that empty.png is not getting added to the site-packages/kivy3/loaders directory (filename becomes None due to resource_find, but the code after resource_find doesn't check for None).

empty.png is missing, but it is not the only file missing.

Adding non-py files to setup.py explicitly seems necessary, since the following files don't get installed via pip install https://github.com/kivy/kivy3/archive/refs/heads/master.zip:

• kivy_env/lib/python3.9/site-packages/kivy3/loaders/empty.png
• kivy_env/lib/python3.9/site-packages/kivy3/default.glsl
• others?

The error was difficult to diagnose due to this kivy issue.