Crash

```
Thread: main, Exception: java.lang.RuntimeException: Failed to call observer method
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:9)
at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:2)
at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:3)
at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:45)
at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:5)
at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:2)
at androidx.fragment.app.Fragment.performCreate(Fragment.java:9)
at androidx.fragment.app.FragmentStateManager.create(FragmentStateManager.java:5)
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:28)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:68)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:10)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:14)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:10)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:11)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:1)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1447)
at android.app.Activity.performStart(Activity.java:8144)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3922)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:235)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:215)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:187)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:105)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2462)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:219)
at android.app.ActivityThread.main(ActivityThread.java:8393)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1055)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at com.airbnb.mvrx.MvRxFactory.create(MvRxFactory.kt:11)
at com.airbnb.mvrx.MvRxViewModelProvider.get$default(MvRxViewModelProvider.kt:31)
at im.vector.app.features.home.room.detail.RoomDetailFragment$special$$inlined$fragmentViewModel$default$1.invoke(MvRxExtensions.kt:6)
at im.vector.app.features.home.room.detail.RoomDetailFragment$special$$inlined$fragmentViewModel$default$1.invoke(Unknown Source:0)
at com.airbnb.mvrx.lifecycleAwareLazy.getValue(lifecycleAwareLazy.kt:5)
at com.airbnb.mvrx.lifecycleAwareLazy$1.onStart(lifecycleAwareLazy.kt:1)
at java.lang.reflect.Method.invoke(Native Method)
at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:7)
... 28 more
Caused by: java.lang.NullPointerException
at im.vector.app.features.home.room.detail.RoomDetailViewModel.(RoomDetailViewModel.kt:15)
at im.vector.app.features.home.room.detail.RoomDetailViewModel_Factory.newInstance(RoomDetailViewModel_Factory.java:1)
at im.vector.app.features.home.room.detail.RoomDetailViewModel_Factory.get(RoomDetailViewModel_Factory.java:1)
at im.vector.app.features.home.room.detail.RoomDetailViewModel_Factory_Impl.create(RoomDetailViewModel_Factory_Impl.java:1)
at im.vector.app.features.home.room.detail.RoomDetailViewModel$Companion.create(RoomDetailViewModel.kt:3)
at im.vector.app.features.home.room.detail.RoomDetailViewModel$Companion.create(RoomDetailViewModel.kt:1)
... 37 more
```