Error while indexing C:\Users\coder82\.gradle\caches\modules-2\files-2.1\org.jetbrains.kotlinx\kotlinx-coroutines-core-common\0.23.3\94ff949da32fa6a0f30aa2c92ba6bd6ca4e21896\kotlinx-coroutines-core-common-0.23.3.jar!\kotlinx\coroutines\experimental\channels\AbstractSendChannel.kotlin_metadata
To reindex this file IDEA has to be restarted: Unknown type parameter with id = 1
java.lang.IllegalStateException: Unknown type parameter with id = 1
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.EmptyTypeParameters.get(ClsStubBuilderContext.kt:56)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeParametersImpl.get(ClsStubBuilderContext.kt:66)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeParametersImpl.get(ClsStubBuilderContext.kt:66)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeParametersImpl.get(ClsStubBuilderContext.kt:66)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeClsStubBuilder.createTypeReferenceStub(TypeClsStubBuilder.kt:69)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeClsStubBuilder.createTypeReferenceStub$default(TypeClsStubBuilder.kt:50)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.TypeClsStubBuilder.createValueParameterListStub(TypeClsStubBuilder.kt:257)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ConstructorClsStubBuilder.createValueParameterList(CallableClsStubBuilder.kt:261)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.CallableClsStubBuilder.build(CallableClsStubBuilder.kt:107)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.CallableClsStubBuilderKt.createConstructorStub(CallableClsStubBuilder.kt:80)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.createConstructorStub(ClassClsStubBuilder.kt:164)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.build(ClassClsStubBuilder.kt:93)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilderKt.createClassStub(ClassClsStubBuilder.kt:55)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.createNestedClassStub(ClassClsStubBuilder.kt:264)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.createInnerAndNestedClasses(ClassClsStubBuilder.kt:244)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.createClassBodyAndMemberStubs(ClassClsStubBuilder.kt:187)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilder.build(ClassClsStubBuilder.kt:96)
	at org.jetbrains.kotlin.idea.decompiler.stubBuilder.ClassClsStubBuilderKt.createClassStub(ClassClsStubBuilder.kt:55)
	at org.jetbrains.kotlin.idea.decompiler.common.KotlinMetadataStubBuilder.buildFileStub(KotlinMetadataStubBuilder.kt:67)
	at com.intellij.psi.impl.compiled.ClassFileStubBuilder.buildStubTree(ClassFileStubBuilder.java:45)
	at com.intellij.psi.impl.compiled.ClassFileStubBuilder.buildStubTree(ClassFileStubBuilder.java:25)
	at com.intellij.psi.stubs.StubTreeBuilder.buildStubTree(StubTreeBuilder.java:61)
	at com.intellij.psi.stubs.StubUpdatingIndex$3.lambda$map$0(StubUpdatingIndex.java:232)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:897)
	at com.intellij.psi.stubs.StubUpdatingIndex$3.map(StubUpdatingIndex.java:214)
	at com.intellij.psi.stubs.StubUpdatingIndex$3.map(StubUpdatingIndex.java:197)
	at com.intellij.util.indexing.impl.MapReduceIndex.mapInput(MapReduceIndex.java:273)
	at com.intellij.util.indexing.VfsAwareMapReduceIndex.calculateUpdateData(VfsAwareMapReduceIndex.java:96)
	at com.intellij.util.indexing.impl.MapReduceIndex.update(MapReduceIndex.java:213)
	at com.intellij.util.indexing.FileBasedIndexImpl.updateSingleIndex(FileBasedIndexImpl.java:1687)
	at com.intellij.util.indexing.FileBasedIndexImpl.lambda$doIndexFileContent$21(FileBasedIndexImpl.java:1615)
	at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.freezeFileTypeTemporarilyIn(FileTypeManagerImpl.java:523)
	at com.intellij.util.indexing.FileBasedIndexImpl.doIndexFileContent(FileBasedIndexImpl.java:1574)
	at com.intellij.util.indexing.FileBasedIndexImpl.indexFileContent(FileBasedIndexImpl.java:1562)
	at com.intellij.util.indexing.UnindexedFilesUpdater.lambda$indexFiles$0(UnindexedFilesUpdater.java:110)
	at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.lambda$run$0(CacheUpdateRunner.java:230)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1134)
	at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.lambda$run$1(CacheUpdateRunner.java:246)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:580)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:525)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:85)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)
	at com.intellij.openapi.project.CacheUpdateRunner$MyRunnable.run(CacheUpdateRunner.java:243)
	at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:305)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)