Apk installer not working on Mudita Center 4.0

[adizzy]

I use Katapult, closest launcher to stock look with extra features, like uninstalling

Katapult by gezimos

Katapult — Community App Review Version: 1.1 A simple launcher for the Mudita Kompakt, similar to the default launcher but with notification indicators, app re-ordering, and customizable home screen shortcuts.