Hi folks We're experiencing some crashes on some d...

# android

[chk]

Hi folks
We're experiencing some crashes on some devices - getting this exception:
Fatal Exception: java.lang.ExceptionInInitializerError
Caused by java.lang.ClassNotFoundException: my.package.InvestmentFeatureImpl$Provider
Caused by java.lang.ClassNotFoundException: Didn't find class "my.package.InvestmentFeatureImpl$Provider" on path: DexPathList[[zip file "/data/app/com.lenddo.mobile.paylater-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]

The format we are using is app-bundles (.aab) (dynamic delivery). The class not found is in a feature module, so we are trying to call a method in that feature module from the core module - using reflection (Kotlin) - Approach 1 (https://medium.com/androiddevelopers/patterns-for-accessing-code-from-dynamic-feature-modules-7e5dca6f9123)
It works well for some devices/users but doesn't for others in production.
I have set proguard rules for the class/interface already but still doesn't work

object InvestmentFeature {
    private const val PROVIDER_CLASS = "$PACKAGE_NAME.InvestmentFeatureImpl\$Provider"
    val investmentModuleProvider = Class.forName(PROVIDER_CLASS).kotlin.objectInstance as InvestmentFeature.Provider
}

class DashboardViewModel constructor(activity: AppCompatActivity) : ViewModel() {

    var investmentModule: InvestmentFeature? = null
    var investmentProductsLiveData: LiveData<List<InvestmentProductEntity>>? = null

    init {
       // ExceptionInInitializerError is thrown here 
       investmentModule = investmentModuleProvider.get()
       investmentProductsLiveData = investmentModule!!.getInvestmentProducts()
    }

This is inside app module:

interface InvestmentFeature {

    fun getInvestmentProducts(): LiveData<List<InvestmentProductEntity>>
    interface Provider {
        fun get(): InvestmentFeature
    }
}

This is inside my feature module - investment

class InvestmentFeatureImpl : InvestmentFeature {

    override fun getInvestmentProducts(): LiveData<List<InvestmentProductEntity>> {
        val repository = Repository.INSTANCE
        return repository.getInvestmentProductsLiveData()
    }

    /**
     * The provider singleton. It is accessed from the base app ViewModel through reflection.
     */
    companion object Provider : InvestmentFeature.Provider {
        override fun get(): InvestmentFeature {
            return InvestmentFeatureImpl()
        }
    }
}

Please I need help on this.