Help! "Could not download all repositories index" error

[codezela]

help please
when i run
apt update && apt dist-upgrade

i got

Ign http://packages.linuxmint.com debian InRelease
Get:1 http://packages.linuxmint.com debian Release.gpg [197 B]
Get:2 http://packages.linuxmint.com debian Release [15.6 kB]
Get:3 http://packages.linuxmint.com debian/main amd64 Packages [27.2 kB]
Hit http://debian.linuxmint.com testing InRelease
E: Release file for http://debian.linuxmint.com/latest/dist ... /InRelease is expired (invalid since 81d 11h 35min 2s). Updates for this repository will not be applied.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
mint-artwork-debian
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

[zerozero]

annoying bug
see here >> http://forums.linuxmint.com/viewtopic.php?f=187&t=76556 end of the first post (known issues)

[codezela]

annoying bug
see here >> http://forums.linuxmint.com/viewtopic.php?f=187&t=76556 end of the first post (known issues)

thank you very much
it works well

[zerozero]

glad it's solved