This issue is happening because there is no 'default' theme in AVAILABLE_THEME
when custom theme imports default theme's file(scss) I uploaded patch for this in case someone want to import default theme rather than creating whole theme seperatly. ** Tags added: sts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1812148 Title: openstack-dashboard failed to upgrade with custom theme To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/horizon/+bug/1812148/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs