Unable to run scenes with pi creatures

Hi everyone,

I am new to manim so please bear with me. I am trying to run older scenes and for them I am unable to run scenes which involve pi creatures. Is there a standard workaround for this?

In particular I get the following error:

UserWarning: No PiCreatures design with mode plain (self.file_name_prefix, mode))

when running the following command from the manim directory:

python manim.py from_3b1b/old/nn/part1.py -pl

As an example I chose scene number 28.

Any help would be appreciated. In case the images are not available I would be happy with a placeholder just to see and confirm that things work.