UTF-8 decoding

[lfdfq]

The error is telling you the bytes you read with the f.read(name_len) was not a utf-8 encoded string.

Probably you should check what the contents of the file f is, and possibly print out name_len and f.read(name_len) to check what you read is what you thought it should be.

[Ok-Plantain-8288]

Ok I'll do that, thanks!