UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8c in position 29: invalid start byte

This error occurs when Python tries to decode a string using the UTF-8 encoding, but encounters a byte that is not a valid starting byte for a UTF-8 character.

This can happen for various reasons, such as:

- The string is not actually encoded in UTF-8, but in a different encoding that uses the byte 0x8c as a valid character.
- The string contains binary data or non-textual characters that cannot be decoded as UTF-8.
- The string was not read or written correctly, causing some bytes to be corrupted or lost.

To fix this error, you need to identify the source of the problem and take appropriate action. Here are some steps you can take:

- Check the source of the string and make sure it is encoded in UTF-8. If not, try using the correct encoding instead.
- If the string contains binary data or non-textual characters, you may need to use a different encoding or handle these characters differently.
- If the string was read or written from a file or network connection, check that the encoding settings are correct and that the data was not corrupted during transmission.
- If none of these steps work, you may need to investigate further to find the root cause of the problem.