Install:
luarocks install dbus_proxy
Perhaps also these.
sudo apt install libgirepository1.0-dev luarocks install --server=http://luarocks.org/manifests/daurnimator ldbus DBUS_INCDIR=/usr/include/dbus-1.0/ DBUS_ARCH_INCDIR=/usr/lib/dbus-1.0/include luarocks install lgi
Install the plugin. Use :Synctex to start