I have a problem launching our application. Since I released the first version of the application there was no problem, I was going to release the second version and I got an unexpected fatal error. This is not a Main Activity error, it is an error in the ThemeStore class. Can someone solve this for me?

FATAL EXCEPTION: main                                                                                                    Process: com.adgutech.adomusic, PID: 6513                                                                                                    java.lang.NoClassDefFoundError: Failed resolution of: Lcom/adgutech/commons/themes/ThemeStore;                                                                                                    at com.adgutech.adomusic.App2.onCreate(App2.kt:38)                                                                                                      at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1119)                                                                                                       at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5781)                                                                                                       at android.app.ActivityThread.-wrap1(Unknown Source:0)                                                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1690)                                                                                                     at android.os.Handler.dispatchMessage(Handler.java:106)                                                                                                     at android.os.Looper.loop(Looper.java:164)                                                                                                      at android.app.ActivityThread.main(ActivityThread.java:6548)                                                                                                        at java.lang.reflect.Method.invoke(Native Method)                                                                                                       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)                                                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)                                                                                                    Caused by: java.lang.ClassNotFoundException: Didn't find class "com.adgutech.commons.themes.ThemeStore" on path: DexPathList[[zip file "/data/app/com.adgutech.adomusic-ltUHFJ-nRJPP24_UJI6tEA==/base.apk"],nativeLibraryDirectories=[/data/app/com.adgutech.adomusic-ltUHFJ-nRJPP24_UJI6tEA==/lib/arm, /system/lib, /vendor/lib]]'                                                                                                      at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)                                                                                                      at java.lang.ClassLoader.loadClass(ClassLoader.java:379)                                                                                                        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)                                                                                                        at com.adgutech.adomusic.App2.onCreate(App2.kt:38)                                                                                                      at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1119)                                                                                                       at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5781)                                                                                                       at android.app.ActivityThread.-wrap1(Unknown Source:0)                                                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1690)                                                                                                         at android.os.Handler.dispatchMessage(Handler.java:106)                                                                                                         at android.os.Looper.loop(Looper.java:164)                                                                                                      at android.app.ActivityThread.main(ActivityThread.java:6548)                                                                                                        at java.lang.reflect.Method.invoke(Native Method)                                                                                                       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)                                                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857) 

App2:

package com.adgutech.adomusic

import android.app.Application
import androidx.preference.PreferenceManager
import com.adgutech.adomusic.appshortcuts.DynamicShortcutManager
import com.adgutech.adomusic.helpers.WallpaperAccentManager
import com.adgutech.commons.isVersionOMR1
import com.adgutech.commons.themes.ThemeStore
import org.koin.android.ext.koin.androidContext
import org.koin.core.context.startKoin

class App2 : Application() {

    companion object {
        private var instance: App2? = null

        fun getContext(): App2 {
            return instance!!
        }
        fun isProVersion(): Boolean {
            return BuildConfig.DEBUG
        }
    }

    override fun onCreate() {
        super.onCreate()

        instance = this

        // default theme
        if (!ThemeStore.isConfigured(this, 3)) {
            ThemeStore.editTheme(this)
                .accentColorRes(R.color.blue_dark_default)
                .coloredNavigationBar(true)
                .commit()
        }
    }
}