Hi, when i try to log into listenbrainz it hangs with the spinning icon and login button greyed out as if it was working but it never logs in. I tried starting strawberry from the terminal and when i pressed login it showed these messages:

(firefox:32973): Gtk-WARNING **: 18:51:54.209: Theme parsing error: gtk.css:1649:16: '-gtk-icon-size' is not a valid property name

(firefox:32973): Gtk-WARNING **: 18:51:54.209: Theme parsing error: gtk.css:1652:16: '-gtk-icon-size' is not a valid property name