Failed to execute script GyazoUpdate

[Tatsu941]

Since 1 or two weeks this window pops up randomly:

Traceback (most recent call last):
File "GyazoUpdate.py", line 385, in
File "GyazoUpdate.py", line 375, in main
File "GyazoUpdate.py", line 285, in main_proc
File "GyazoUpdate.py", line 231, in check_process_is_running
File "GyazoUpdate.py", line 221, in get_command_output
File "encodings\cp1252.py", line 23, in decode
UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 74: character maps to