Python GUI's With TKinter https://nazmul-ahsan.medium.com/how-to-organize-multi-frame-tkinter-application-with-mvc-pattern-79247efbb02b Unprivileged namespaces sudo sysctl -w kernel.apparmor_restrict_unprivileged_unconfined=0 sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0