Can't convert comic

I've been trying to convert a comic from the cbz format to MOBI, but I keep getting this error:
Python function terminated unexpectedly
Traceback (most recent call last):
File "site.py", line 114, in main
File "site.py", line 88, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 209, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 43, in gui_convert_override
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 28, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 1110, in run
File "site-packages\calibre\customize\conversion.py", line 246, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\comic_i nput.py", line 185, in convert
File "site-packages\calibre\ebooks\conversion\plugins\comic_i nput.py", line 149, in get_pages
File "site-packages\calibre\ebooks\comic\input.py", line 273, in process_pages
Exception: Failed to process comic:

If it helps I'm on windows 10