'gbk' codec can't decode byte 0x9a

This error occurs when trying to decode a byte string that contains non-ASCII characters using the 'gbk' codec. The byte 0x9a is not a valid character in the 'gbk' encoding and cannot be decoded.

To fix this error, you can try decoding the byte string using a different encoding that supports the characters in the string. Common alternatives to 'gbk' include 'utf-8' and 'latin-1'. You can also check if the byte string was encoded using a different encoding and decode it accordingly.

Alternatively, you can try using the 'replace' error handler to replace invalid characters with a placeholder character instead of raising an error. For example, you can use the following code to decode the byte string with the 'replace' error handler:

byte_string = b'some byte string with invalid characters'
decoded_string = byte_string.decode('gbk', errors='replace')

This will replace any invalid characters with the Unicode replacement character '\ufffd'.