When enabling Plugin on IDEA 2023.1 the following stacktrace is thrown:
java.lang.Throwable: Read access is allowed from inside read-action (or EDT) only (see com.intellij.openapi.application.Application.runReadAction())
Current thread: Thread[Alarm Pool,4,main] 1452793963 (EventQueue.isDispatchThread()=false)
SystemEventQueueThread: Thread[AWT-EventQueue-0,6,main] 889875662
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:202)
at com.intellij.openapi.application.impl.ApplicationImpl.assertReadAccessAllowed(ApplicationImpl.java:1004)
at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexDataImpl.ensureIsUpToDate(WorkspaceFileIndexDataImpl.kt:127)
at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexDataImpl.getFileInfo(WorkspaceFileIndexDataImpl.kt:70)
at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexImpl.getFileInfo(WorkspaceFileIndexImpl.kt:220)
at com.intellij.workspaceModel.core.fileIndex.impl.WorkspaceFileIndexImpl.findFileSetWithCustomData(WorkspaceFileIndexImpl.kt:205)
at com.intellij.openapi.roots.impl.ProjectFileIndexImpl.getContentRootForFile(ProjectFileIndexImpl.java:219)
at com.intellij.openapi.roots.impl.ProjectFileIndexImpl.getContentRootForFile(ProjectFileIndexImpl.java:213)
at org.antlr.intellij.plugin.parsing.RunANTLROnGrammarFile.getContentRoot(RunANTLROnGrammarFile.java:269)
at org.antlr.intellij.plugin.parsing.RunANTLROnGrammarFile.getANTLRArgs(RunANTLROnGrammarFile.java:209)
at org.antlr.intellij.plugin.parsing.RunANTLROnGrammarFile.getANTLRArgsAsList(RunANTLROnGrammarFile.java:178)
at org.antlr.intellij.plugin.validation.GrammarIssuesCollector.collectGrammarIssues(GrammarIssuesCollector.java:37)
at org.antlr.intellij.plugin.ANTLRv4ExternalAnnotator.doAnnotate(ANTLRv4ExternalAnnotator.java:37)
at org.antlr.intellij.plugin.ANTLRv4ExternalAnnotator.doAnnotate(ANTLRv4ExternalAnnotator.java:24)
at com.intellij.codeInsight.daemon.impl.ExternalToolPass.doAnnotate(ExternalToolPass.java:204)
at com.intellij.codeInsight.daemon.impl.ExternalToolPass.doAnnotate(ExternalToolPass.java:198)
at com.intellij.codeInsight.daemon.impl.ExternalToolPass.runChangeAware(ExternalToolPass.java:274)
at com.intellij.codeInsight.daemon.impl.ExternalToolPass$1.lambda$run$1(ExternalToolPass.java:176)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:186)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$13(CoreProgressManager.java:604)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:679)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:635)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:603)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:60)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:173)
at com.intellij.openapi.progress.util.BackgroundTaskUtil.runUnderDisposeAwareIndicator(BackgroundTaskUtil.java:361)
at com.intellij.openapi.progress.util.BackgroundTaskUtil.runUnderDisposeAwareIndicator(BackgroundTaskUtil.java:339)
at com.intellij.codeInsight.daemon.impl.ExternalToolPass$1.run(ExternalToolPass.java:175)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:350)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:340)
at com.intellij.util.ui.update.MergingUpdateQueue.doExecute(MergingUpdateQueue.java:297)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:280)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:245)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:249)
at com.intellij.util.Alarm$Request.runSafely(Alarm.java:365)
at com.intellij.util.Alarm$Request.run(Alarm.java:354)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:272)
at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:248)
at com.intellij.util.concurrency.BoundedTaskExecutor.access$200(BoundedTaskExecutor.java:28)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.executeFirstTaskAndHelpQueue(BoundedTaskExecutor.java:221)
at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:227)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:210)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
at java.base/java.lang.Thread.run(Thread.java:833)
When enabling Plugin on IDEA 2023.1 the following stacktrace is thrown: