This is probably because you hardcoded Gnome in Keyring configuration file,
however that backend was removed in Keyring 8.x (moved to keyrings.alt package).
The recommeneded alternative is to install python-secretstorage and let Keyring
use the default secretstorage-based backend instead (which is compatible with
GNOME Keyring too).
Hi Dmitry
You're right, i forgot that there was a config file and indeed it contained:
[backend]
default-keyring=keyring.backends.Gnome.Keyring
After removing these lines, keyring works again
You can close this one.
Thanks,
--
Matthieu