In my app level build.gradle file I have enabled minification

buildTypes {
    debug {
        signingConfig signingConfigs.debug
    }
    release {
        signingConfig signingConfigs.release
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
    }
}

Then app crashes when I install the apk in my android device.

When I checked the logcat from Android Studio, I get this error.

FATAL EXCEPTION: mqt_native_modules
Process: com.skoolbag.singleapp, PID: 7895
java.lang.RuntimeException: Could not invoke RNQBSettingsModule.init
    at com.facebook.react.bridge.JavaMethodWrapper.invoke(Unknown Source:192)
    at com.facebook.react.bridge.JavaModuleWrapper.invoke(Unknown Source:147)
    at com.facebook.jni.NativeRunnable.run(Native Method)
    at android.os.Handler.handleCallback(Handler.java:942)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(Unknown Source:0)
    at android.os.Looper.loopOnce(Looper.java:226)
    at android.os.Looper.loop(Looper.java:313)
    at com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run(Unknown Source:37)
    at java.lang.Thread.run(Thread.java:1012)
Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)

As suggested in similar questions I checked where RNQBSettingsModule is coming from.

What I found was this

Therefore, I added the following code to the android/app/proguard-rules.pro file to not obfuscate this particular package.

-keep class com.quickblox.reactnative.settings.** {*;}

But this this not resolve the issue