Hello, please help. Where can there be a mistake ? AS 4.0.1 Thanks

Did you try an

Invalidate caches/Restart

?

I tried Invalidate Caches / Restart, Clean and Rebuild project and delete folder intermediates and it didn't help.

Could you please specify: - When this occur occurs (after which Gradle task or IDE action) - What dependencies of androidx.navigation you are using ?

https://pastebin.com/q67jW8Gy https://pastebin.com/vsGTx0WF https://pastebin.com/MgLr53Je

Some hints: - You have set an application id prefix twice. - You are mixing incompatible versions of the support library : 29.0.0 and 30.0.0. Since you are targeting API 30, always use 30.x.x. (side note: I dont know how it is ever possible to use support library with version above 28.x.x, since it has been discontinued and replaced by AndroidX) - Purpose of

android.arch.navigation:navigation-runtime-ktx:1.0.0

?

This le just a test app, thanks I'll take a look at it 🙂