An unexpected error ocurred: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xed in position 87: invalid continuation byte

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Hello @xMani and Welcome to the forum...

@xMani

UnicodeDecodeError:

Please read the following thread that I have linked to. This is a similar problem to what you describe and was resolved to the users satisfaction.

@_az

The Unicode is likely to be in /etc/nginx rather than /etc/letsencrypt. I think all of the Unicode+nginx bugs have been fixed by now, but 0.31 is a very old release that doesn't have those fixes. If you can, try upgrading to the latest Certbot using the Debian instructions (snap) or pip instruction…

Hope this helps!