Disabled all my repositories by commenting out everything in /etc/apt/sources.list and moving everything out of /etc/apt/sources.list.d; it did the trick: could update appstream from proposed repository. Thanks!
Disabled all my repositories by commenting out everything in /etc/apt/ sources. list and moving everything out of /etc/apt/ sources. list.d; it did the trick: could update appstream from proposed repository. Thanks!