mintreport: 'utf-8' codec can't decode byte 0xc0 in position 621: invalid start byte

Hi,

starting mintreport it fails with decoding utf-8:

$ LC_ALL=C mintreport
Checking 045_xappstatusapplet-missing
Checking 050_install-media-codecs
Checking 060_timeshift-no-setup
Checking 070_new-release
Checking 071_new_major_release
Checking 080_release-eol
Checking 100_usrmerge-not-done
Checking 200_xappstatusapplet-blocked
Checking 500_install-language-packs
Checking 900_drivers
'utf-8' codec can't decode byte 0xc0 in position 621: invalid start byte

Don't know what is wrong, ideas?

Using:

Distributor ID: Linuxmint
Description:    Linux Mint 21.1
Release:    21.1
Codename:   vera

linuxmint / mintupgrade

mintreport: 'utf-8' codec can't decode byte 0xc0 in position 621: invalid start byte #70