Playstore warnings: App Bundle contains native code, which can be deobfused & you have not uploaded any debugging symbols

Question

I know this question is asked before this as well and there are already some answers are available but still its not working for the ionic 4 app which I want to publish.

This App Bundle contains Java / Kotlin code, which can be deobfused. We recommend uploading a deobfuscation file for easier analysis and resolution of your crashes and ANRs.

And

This App Bundle contains native code and you have not uploaded any debugging symbols. We recommend uploading a symbol file so that your crashes and ANRs can be more easily analyzed and resolved

answers says first one can be fixed by adding minifyEnabled true & shrinkResources true to this part of the build.gradle file:

buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        signingConfig signingConfigs.release
    }
} 

for second warning: according to this gradle plugin version should be 4.1 and above and my app having proper version, also as per this doc I have installed ndk (side by side) and added

android.buildTypes.release.ndk.debugSymbolLevel = { SYMBOL_TABLE } 

in gradle file as well and still I am getting those warnings while uploading the app to the playstore.

any help is appreciated.