Random NoBeanDefFoundException

Describe the bug Some NoBeanDefFoundException are triggered “randomly”.

It usually works OK, but sometimes it fails.

Example of stacktrace:

Caused by org.koin.core.error.NoBeanDefFoundException: No definition found for class:'com.jeff.feature.turndetail.presentation.detail.TurnDetailRenderer'. Check your definitions!
       at org.koin.core.scope.Scope.throwDefinitionNotFound(Scope.kt:246)
       at org.koin.core.scope.Scope.resolveInstance(Scope.kt:216)
       at org.koin.core.scope.Scope.get(Scope.kt:181)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment$$special$$inlined$inject$1.invoke(Scope.kt:396)
       at kotlin.UnsafeLazyImpl.getValue(Lazy.kt:81)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment.getRenderer(:2)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment.access$getRenderer$p(TurnDetailFragment.kt:34)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment$turnResId$2.invoke(TurnDetailFragment.kt:75)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment$turnResId$2.invoke(TurnDetailFragment.kt:34)
       at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment.getTurnResId(:2)
       at com.jeff.feature.turndetail.presentation.detail.TurnDetailFragment.setupUI(TurnDetailFragment.kt:103)
       at com.jeff.library.base.presentation.fragment.StatelessJeffViewModelExtFragment.onViewCreated(StatelessJeffViewModelExtFragment.kt:50)
       at com.jeff.library.base.presentation.fragment.JeffViewModelExtFragment.onViewCreated(JeffViewModelExtFragment.kt:19)
       at androidx.fragment.app.Fragment.performViewCreated(Fragment.java:2974)
       at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:550)
       at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:277)
       at androidx.fragment.app.FragmentStore.moveToExpectedState(FragmentStore.java:112)
       at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1636)
       at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3112)
       at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3056)
       at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251)
       at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:473)
       at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:210)
       at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1433)
       at android.app.Activity.performStart(Activity.java:7986)
       at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3677)
       at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
       at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
       at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
       at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2267)
       at android.os.Handler.dispatchMessage(Handler.java:107)
       at android.os.Looper.loop(Looper.java:237)
       at android.app.ActivityThread.main(ActivityThread.java:8167)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)

To Reproduce I have not been able to reproduce the error. I just see the crashes tracked on Crashlytics.

Expected behavior Provide the class all times if it is possible.

Koin project used and used version (please complete the following information): org.koin:koin-core:2.1.6 org.koin:koin-core-ext:2.1.6 org.koin:koin-androidx-fragment:2.1.6 org.koin:koin-androidx-scope:2.1.6 org.koin:koin-androidx-viewmodel:2.1.6

[valeriyo]

This just happened to me as well, also with Koin 2.1.6

The crash occurred only once on Android 6.0.1 (Galaxy J3 Emerge) - and from the log before the crash, I can tell that the same resolution previously worked. So, it looks like it randomly failed. The crash occurred on main thread.

[valeriyo]

This happens when the app is restoring its saved state - from android.app.ActivityThread.main at the top of callstack, and by that time the Scope instance (where org.koin.core.scope.Scope.resolveInstance fails) has been created already.

Does Koin do anything asynchronously?