App Icon not Shown on Android Notification

I have set the smallIcon and LargeIcon to 'ic_notif', saved it in res/drawable but the only thing appears is an Info Icon.
It seems that it can't find the icon but it's saved properly.

When editing [Notifications.kt](https://github.com/ionic-team/capacitor-background-runner/blob/main/packages/capacitor-plugin/android/src/main/java/io/ionic/backgroundrunner/plugin/api/Notifications.kt#L156) at Line 156 and set `smallIconConfigResourceName` to the resource name - it works.