Fixing bugs when running on Ubuntu 20.04

[eshiofune]

• You may run into an error saying: ModuleNotFoundError: No module named 'tkinter'. Fix it by installing tkinter directly:

sudo apt-get install python3-tk

• You may also run into:

X Error of failed request:  BadLength (poly request too large or internal Xlib length error)
  Major opcode of failed request:  139 (RENDER)
  Minor opcode of failed request:  20 (RenderAddGlyphs)
  Serial number of failed request:  780
  Current serial number in output stream:  801

Fixed by running:

sudo apt remove --purge fonts-noto-color-emoji