Utf-8' codec can't decode byte

After the last updates my mp3 files won’t play anymore on my Google home speaker.
When I click on the mp3 file in file manager, I get this message:
utf-8’ codec can’t decode byte 0xff in position 45: invalid start byte

Is the a solution for this ?

Found the solution: My SSL certificate was the problem.

What exactly was the problem with your SSL cert? I am having this issue with the Google TTS, and I know my cert is good, and my base URL is correct. TTS just stopped working suddenly.

My cerificate was expired,
but after installing a new certificate, there was still a problem.
This was solved by also installing a intermediate certificate
that was included with my certificate files.