Assertion failed: Duplicate bundled template New Kotlin Property Initializer.kt

java.lang.Throwable: Assertion failed: Duplicate bundled template New Kotlin Property Initializer.kt [jar:file:/Applications/Android%20Studio%20Preview.app/Contents/plugins/Kotlin/lib/kotlin-idea.jar!/fileTemplates/code/New Kotlin Property Initializer.kt.ft, jar:file:/Users/takayuki/Library/Application%20Support/Google/AndroidStudio2020.3/plugins/Kotlin/lib/kotlin-idea.jar!/fileTemplates/code/New Kotlin Property Initializer.kt.ft]
    at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:201)
    at com.intellij.ide.fileTemplates.impl.FTManager.createAndStoreBundledTemplate(FTManager.java:210)
    at com.intellij.ide.fileTemplates.impl.FTManager.setDefaultTemplates(FTManager.java:199)
    at com.intellij.ide.fileTemplates.impl.FileTemplatesLoader.loadConfiguration(FileTemplatesLoader.java:170)
    at com.intellij.ide.fileTemplates.impl.FileTemplatesLoader.lambda$new$0(FileTemplatesLoader.java:64)
    at com.intellij.openapi.util.ClearableLazyValue$2.compute(ClearableLazyValue.java:26)
    at com.intellij.openapi.util.ClearableLazyValue.getValue(ClearableLazyValue.java:39)
    at com.intellij.openapi.util.AtomicClearableLazyValue.getValue(AtomicClearableLazyValue.java:9)
    at com.intellij.ide.fileTemplates.impl.FileTemplatesLoader.getAllManagers(FileTemplatesLoader.java:118)
    at com.intellij.ide.fileTemplates.impl.FileTemplateSettings.getState(FileTemplateSettings.java:43)
    at com.intellij.ide.fileTemplates.impl.FileTemplateSettings.getState(FileTemplateSettings.java:20)
    at com.intellij.configurationStore.ComponentStoreImpl.commitComponent(ComponentStoreImpl.kt:326)
    at com.intellij.configurationStore.ComponentStoreImpl.commitComponents$intellij_platform_configurationStore_impl(ComponentStoreImpl.kt:233)
    at com.intellij.configurationStore.ComponentStoreWithExtraComponents.commitComponents$intellij_platform_configurationStore_impl(ComponentStoreWithExtraComponents.kt:96)
    at com.intellij.configurationStore.ComponentStoreImpl$commitComponentsOnEdt$$inlined$withEdtContext$intellij_platform_configurationStore_impl$1.invokeSuspend(ComponentStoreImpl.kt:709)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
    at com.intellij.openapi.application.constraints.BaseConstrainedExecution$Companion$scheduleWithinConstraints$1.invoke(BaseConstrainedExecution.kt:68)
    at com.intellij.openapi.application.constraints.BaseConstrainedExecution$Companion.scheduleWithinConstraints(BaseConstrainedExecution.kt:71)
    at com.intellij.openapi.application.constraints.BaseConstrainedExecution.scheduleWithinConstraints(BaseConstrainedExecution.kt:38)
    at com.intellij.openapi.application.impl.BaseExpirableExecutorMixinImpl.access$scheduleWithinConstraints$s1153900543(BaseExpirableExecutorMixinImpl.kt:12)
    at com.intellij.openapi.application.impl.BaseExpirableExecutorMixinImpl$scheduleWithinConstraints$$inlined$Runnable$1.run(Runnable.kt:19)
    at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:216)
    at com.intellij.openapi.application.TransactionGuardImpl.access$200(TransactionGuardImpl.java:24)
    at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:199)
    at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:828)
    at com.intellij.openapi.application.impl.ApplicationImpl.lambda$invokeLater$4(ApplicationImpl.java:330)
    at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:85)
    at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:134)
    at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:47)
    at com.intellij.openapi.application.impl.FlushQueue$FlushNow.run(FlushQueue.java:190)
    at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:746)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:976)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:843)
    at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:454)
    at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:773)
    at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$9(IdeEventQueue.java:453)
    at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:828)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:501)
    at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

kotlinのplugin 203-1.5.30-M1-release-140-AS7717.8をうっかりインストールするたびにエラーが起こって削除してます。

plugin uninstall後は203-1.5.20-release-289-AS7717.8に戻ります。

uninstallしても完全に消えてなくなるわけじゃなく1つ前?に戻るようです。

1.5.30ってなんだ?と思ったらこういうことみたいです。
Preview of Kotlin 1.5.30 With Native Apple Silicon Support, Improved Kotlin DSL for the CocoaPods Gradle Plugin, and More | The Kotlin Blog

環境

Android Studio Arctic Fox | 2020.3.1
Build #AI-203.7717.56.2031.7583922, built on July 27, 2021
Runtime version: 11.0.10+0-b96-7281165 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 11.5.1
GC: G1 Young Generation, G1 Old Generation
Memory: 2560M
Cores: 8
Registry: external.system.auto.import.disabled=true
Non-Bundled Plugins: Dart, com.thoughtworks.gauge, org.jetbrains.kotlin, io.flutter, org.intellij.plugins.markdown