After the update on 25/04/2019, I am receiving the following error on all the bots I have created which have worked previously:

File "%APPDATA%\Roaming\Python\Python37\site-packages\sc2\pixel_map.py", line 10, in init
assert self.bits_per_pixel % 8 == 0, "Unsupported pixel density"

It seems like self.bits_per_pixel is equal to 1.