Error while encoding file encode decode library socket. What to do?

Question

HTML

unicodedecodeerror "utf-8" codec can not decode dyte 0x89 in position 3: invalid start dyte

Answer 1

Definitely browser cache. If I need to "force" the favicon to update for all users, then I add ?ver=2 to the icon name. Always works...
Example, /favicon.ico?ver=2 and check if the path is correct.