$ sudo apt-get update
Get:1 Index of /debian buster-backports InRelease [46.7 kB]
Hit:2 Index of /deb/r4.0/vm/ buster InRelease
Hit:3 Index of /r4.0/vm/ buster InRelease
Hit:4 Index of /debian buster InRelease
Get:5 Index of /debian-security buster/updates InRelease [65.4 kB]
Err:2 Index of /deb/r4.0/vm/ buster InRelease
The following signatures were invalid: EXPKEYSIG A8F7A1DC99F29DAA Qubes OS Contrib Release 4 Signing Key
Fetched 112 kB in 1s (134 kB/s)
Reading package lists… Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: Index of /deb/r4.0/vm/ buster InRelease: The following signatures were invalid: EXPKEYSIG A8F7A1DC99F29DAA Qubes OS Contrib Release 4 Signing Key
W: Failed to fetch https://contrib.qubes-os.org/deb/r4.0/vm/dists/buster/InRelease The following signatures were invalid: EXPKEYSIG A8F7A1DC99F29DAA Qubes OS Contrib Release 4 Signing Key
W: Some index files failed to download. They have been ignored, or old ones used instead.
Does anybody has the same problem with updating of the Debian 10 version?