I tried to launch the Unity Tweak tool, which had been working fine before, and it wouldn't work at all. When I do it from the terminal, I get this:
user@chrubuntu:~$ unity-tweak-tool
Traceback (most recent call last):
File "/usr/bin/unity-tweak-tool", line 72, in <module>
UnityTweakTool.Application()
File "/usr/lib/python3/dist-packages/UnityTweakTool/__init__.py", line 79, in __init__
executable_name=cmd_old.split('\x00')[1]
IndexError: list index out of range
How do I fix this?