'utf-8' codec can't decode byte 0xc6 in position 37: invalid continuation byte

This error occurs when Python encounters a character that it cannot decode using the 'utf-8' encoding. In this case, the byte 0xc6 is not a valid continuation byte in the 'utf-8' encoding.

To resolve this issue, you can try the following steps:

1. Check the encoding of the file or data you are trying to read. It might be encoded in a different encoding that is not 'utf-8'.

2. If the file or data is in a different encoding, you can specify the encoding explicitly when reading it by using the `encoding` parameter in the `open()` function.

3. If you are working with text that contains non-ASCII characters, consider using a different encoding such as 'utf-16' or 'latin-1'.

4. If none of the above steps work, you can try to decode the data using a different encoding using the `decode()` function. For example, `data.decode('iso-8859-1')`.

Remember to always handle encoding errors properly to avoid unexpected behavior in your code.