A fix for this issue with Ubuntu
echo $XDG_RUNTIME_DIR
/run/user/1000
add this path to your .profile
GNOME_KEYRING_CONTROL=$XDG_RUNTIME_DIR
reload the source
log off your gnome session,
try with workbench again
You should be prompted for a password to unlock the keychain if it is locked. Use your current account password to do so.
This is a temporary workaround.
Another fix submitted by a user
References: