(647/647) checking keys in keyring [######################] 100% downloading required keys... error: key "7258734B41C31549" could not be looked up remotely error: key "6D42BDD116E0068F" could not be looked up remotely error: key "3B94A80E50A477C7" could not be looked up remotely error: key "9D4C5AA15426DA0A" could not be looked up remotely error: required key missing from keyring error: failed to commit transaction (unexpected error) Errors occurred, no packages were upgraded.