[Windows 10] Plugin Import failure

[Derpitron]

Stack trace:

Traceback (most recent call last):
  File "<frozen importlib._bootstrap_external>", line 529, in _check_name_wrapper
  File "<frozen importlib._bootstrap_external>", line 1029, in load_module
  File "<frozen importlib._bootstrap_external>", line 854, in load_module
  File "<frozen importlib._bootstrap>", line 274, in _load_module_shim
  File "<frozen importlib._bootstrap>", line 711, in _load
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 846, in exec_module
  File "<frozen importlib._bootstrap_external>", line 983, in get_code
  File "<frozen importlib._bootstrap_external>", line 913, in source_to_code
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
ValueError: source code string cannot contain null bytes

OS: Windows 10
Quod Libet Version: 4.5.0

I don't expect this to be fixed as you use Linux. But I'm posting it here anyway in case someone else tries this plugin on Windows or wants to patch it.