Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

EpoxyProcessorException: Write model failed Caused by: java.lang.IllegalStateException: Type mirror does not exist for android.view.ViewParent

See original GitHub issue

Intermittently getting the following error during kapt since updating to 4.4.1 (previously worked fine in 4.2.0):

error: EpoxyProcessorException: Write model failed
  com.airbnb.epoxy.processor.EpoxyProcessorException: Write model failed
  	at com.airbnb.epoxy.processor.Logger.logError(Logger.kt:63)
  	at com.airbnb.epoxy.processor.Asyncable$DefaultImpls.awaitAndLog(Asyncable.kt:136)
  	at com.airbnb.epoxy.processor.Asyncable$awaitAndLog$1.invokeSuspend(Asyncable.kt)
  	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
  	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
  Caused by: java.lang.IllegalStateException: Type mirror does not exist for android.view.ViewParent
  	at com.airbnb.epoxy.processor.Utils.areParamsTheSame(Utils.kt:325)
  	at com.airbnb.epoxy.processor.Utils.getMethodOnClass(Utils.kt:290)
  	at com.airbnb.epoxy.processor.Utils.getMethodOnClass(Utils.kt:303)
  	at com.airbnb.epoxy.processor.Utils.implementsMethod(Utils.kt:266)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.addCreateHolderMethodIfNeeded(GeneratedModelWriter.kt:1103)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateDefaultMethodImplementations(GeneratedModelWriter.kt:1069)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateClassForModel(GeneratedModelWriter.kt:148)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateClassForModel$default(GeneratedModelWriter.kt:121)
  	at com.airbnb.epoxy.processor.EpoxyProcessor.writeModel(EpoxyProcessor.kt:104)
  	at com.airbnb.epoxy.processor.EpoxyProcessor.access$writeModel(EpoxyProcessor.kt:25)
  	at com.airbnb.epoxy.processor.EpoxyProcessor$processRound$6.invokeSuspend(EpoxyProcessor.kt:87)
  	at com.airbnb.epoxy.processor.EpoxyProcessor$processRound$6.invoke(EpoxyProcessor.kt)
  	at com.airbnb.epoxy.processor.Asyncable$map$2$invokeSuspend$$inlined$map$lambda$1.invokeSuspend(Asyncable.kt:30)
  	... 6 moreerror: EpoxyProcessorException: Write model failed
  com.airbnb.epoxy.processor.EpoxyProcessorException: Write model failed
  	at com.airbnb.epoxy.processor.Logger.logError(Logger.kt:63)
  	at com.airbnb.epoxy.processor.Asyncable$DefaultImpls.awaitAndLog(Asyncable.kt:136)
  	at com.airbnb.epoxy.processor.Asyncable$awaitAndLog$1.invokeSuspend(Asyncable.kt)
  	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
  	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
  	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
  Caused by: java.lang.IllegalStateException: Type mirror does not exist for android.view.ViewParent
  	at com.airbnb.epoxy.processor.Utils.areParamsTheSame(Utils.kt:325)
  	at com.airbnb.epoxy.processor.Utils.getMethodOnClass(Utils.kt:290)
  	at com.airbnb.epoxy.processor.Utils.getMethodOnClass(Utils.kt:303)
  	at com.airbnb.epoxy.processor.Utils.implementsMethod(Utils.kt:266)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.addCreateHolderMethodIfNeeded(GeneratedModelWriter.kt:1103)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateDefaultMethodImplementations(GeneratedModelWriter.kt:1069)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateClassForModel(GeneratedModelWriter.kt:148)
  	at com.airbnb.epoxy.processor.GeneratedModelWriter.generateClassForModel$default(GeneratedModelWriter.kt:121)
  	at com.airbnb.epoxy.processor.EpoxyProcessor.writeModel(EpoxyProcessor.kt:104)
  	at com.airbnb.epoxy.processor.EpoxyProcessor.access$writeModel(EpoxyProcessor.kt:25)
  	at com.airbnb.epoxy.processor.EpoxyProcessor$processRound$6.invokeSuspend(EpoxyProcessor.kt:87)
  	at com.airbnb.epoxy.processor.EpoxyProcessor$processRound$6.invoke(EpoxyProcessor.kt)
  	at com.airbnb.epoxy.processor.Asyncable$map$2$invokeSuspend$$inlined$map$lambda$1.invokeSuspend(Asyncable.kt:30)
  	... 6 morewarning: The following options were not recognized by any processor: '[kapt.kotlin.generated, room.incremental]'