ConfigurationController: Prevent app crash caused by null configuration

fixes:
* https://bin.kv2.dev/~640b1b26e599576ea02bdd81



test: open app in bug, no crashes after patch

Signed-off-by: minaripenguin <minaripenguin@users.noreply.github.com>
Signed-off-by: Anushek Prasal <anushekprasal@gmail.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>