我有一个使用android studio的项目，并且使用了Kotlin
然后创建新的小部件，然后选择kotlin作为源语言
它得到错误
文件不是kotlin，而是java
这是我的错误日志
org.jetbrains.kotlin.idea.actions.JavaToKotlinAction$Companion.convertFiles$default(Lorg/jetbrains/kotlin/idea/actions/JavaToKotlinAction$Companion;Ljava/util/List;Lcom/intellij/openapi/project/Project;ZZILjava/lang/Object;)Ljava/util/List;
at org.jetbrains.kotlin.android.ConvertJavaToKotlinProviderImpl.convertToKotlin(ConvertJavaToKotlinProviderImpl.kt:46)
at com.android.tools.idea.npw.model.JavaToKotlinHandler.lambda$callConverter$2(JavaToKotlinHandler.java:86)
at com.intellij.openapi.project.DumbServiceImpl.lambda$smartInvokeLater$7(DumbServiceImpl.java:445)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:315)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.doRun(LaterInvocator.java:435)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:419)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:403)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
at java.awt.EventQueue.access$500(EventQueue.java:98)
at java.awt.EventQueue$3.run(EventQueue.java:715)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:757)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:706)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:375)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)