UnicodeDecodeError: 'gbk' codec can't decode byte 0xb0 in position 66: illegal multibyte sequence

This error indicates that there is a problem with decoding a byte sequence using the 'gbk' codec. Specifically, the byte sequence contains an illegal multibyte character at position 66, which cannot be decoded properly.

To fix this error, you can try a few things:

1. Check the encoding of the input data. If the data is not encoded in 'gbk', you may need to use a different codec to decode it.

2. Use a more robust decoding method that can handle multibyte characters. For example, you can try using the 'utf-8' codec instead of 'gbk'.

3. Clean the input data to remove any illegal characters before decoding. This may involve manually inspecting the data and removing any characters that are not valid in the chosen encoding.

Overall, the best solution will depend on the specific data and context of your application.