Hello,

# apt-get update

"No acces to :
http://mirror.xcer.cz/trinity-sb/dists/buster/InRelease  
403  Forbidden [IP�: 91.241.23.210 80]
The deposit http://mirror.xcer.cz/trinity-sb buster InRelease is not signed. 
The upgrades cannot be secured and so, are desactivated".

Quid, what to do ?

Thank you, cheers,

Andr�