### What is the issue? My application with Pusher version 2.4.# crashes on Pusher's initialization on Android API 21-22. I did like described [here](https://developer.android.com/studio/write/java8-support#library-desugaring), but it doesn't change anything with it. _AGP version 7.4.2 coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.0.4")_ _implementation "com.pusher:pusher-java-client:2.4.4"_ _Project's compile, target SDK 33 Min SDK 21_ ### Is it a crash report? Submit stack traces or anything that you think would help ``` java.lang.NoClassDefFoundError: com.pusher.client.Pusher$$ExternalSyntheticLambda0 at com.pusher.client.Pusher.<init>(Pusher.java:103) at com.pusher.client.Pusher.<init>(Pusher.java:85) at myapp.features.chat.data.PusherWebSocket.<init>(PusherWebSocket.java:122) at myapp.data.chat.NewWebSocketChatRepositoryImpl.<init>(NewWebSocketChatRepositoryImpl.kt:29) at myapp.presentation.chat.ConsultantChatMessagesRepositoryFactory.create(ConsultantHelper.kt:62) at myapp.presentation.chat.ConsultantFragment.createChatViewModel(ConsultantFragment.java:51) at myapp.presentation.chat.ChatFragment.onCreateView(ChatFragment.java:80) at androidx.fragment.app.Fragment.performCreateView(Fragment.java:3104) at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:524) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261) at androidx.fragment.app.FragmentStore.moveToExpectedState(FragmentStore.java:113) at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1433) at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2977) at androidx.fragment.app.FragmentManager.dispatchViewCreated(FragmentManager.java:2888) at androidx.fragment.app.Fragment.performViewCreated(Fragment.java:3129) at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:552) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261) at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1899) at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1823) at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1760) at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:547) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5221) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) ``` It works with Pusher version 2.2.8. ---- CC @pusher/mobile