'Flutter Firebase Push-Notification Icon on a android device sometimes grey, sometimes appear the icon
I have a little challenge: We have implemented push-notification and it works finde. The Problem is, that on my Android device appears the Push-Icon, but on the Android device of my colleague, its only grey without our Icon. I have the same problem on the Android emulator, their appear the push notification, but without icon, only grey. But on some real devices appears the icon, on some real devices it doesnt appears. What can I do?
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