I would still recommend at least upgrading to 11.1.1 because it fixes many issues on 11.1.0 (+ manually fixing the admins aliases as explained before), you will need to (at least temporarily) enable testing with : curl https://install.yunohost.org/switchtoTesting | bash
And then once the upgrade is done, you can remove the “testing” keyword in /etc/apt/sources.list.d/yunohost.list