According to Khurshid Alam, “this is due to an update of gsettings-desktop-schemas to 40. A fix is in progress. So you can either wait for the fix or downgrade gsettings-desktop-schemas meanwhile to 3.38 and it will work.”
According to Khurshid Alam, “this is due to an update of gsettings- desktop- schemas to 40. A fix is in progress. So you can either wait for the fix or downgrade gsettings- desktop- schemas meanwhile to 3.38 and it will work.”