Error message: ``` xdg-desktop-menu: No writable system menu directory found. dpkg: error processing package briar-desktop (--install): installed briar-desktop package post-installation script subprocess returned error exit status 3 Errors were encountered while processing: briar-desktop ``` workaround found [here](https://github.com/bisq-network/bisq/issues/848): ``` sudo mkdir /usr/share/desktop-directories/ ```