Exception in plugin Pagdown Doclet for IDEA 2020.3.2 RC

[kgharibyan]

java.lang.NoClassDefFoundError: com/sun/javadoc/SeeTag
at ch.raffael.doclets.pegdown.integrations.idea.PegdownDocumentationProvider.generateDoc(PegdownDocumentationProvider.java:127)
at com.intellij.lang.java.JavaDocumentationProvider.generateHoverDoc(JavaDocumentationProvider.java:580)
at com.intellij.lang.documentation.CompositeDocumentationProvider.generateHoverDoc(CompositeDocumentationProvider.java:151)
at com.intellij.codeInsight.documentation.DocumentationManager$MyCollector.lambda$getDocumentation$2(DocumentationManager.java:1572)
at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.insideReadAction(NonBlockingReadActionImpl.java:521)
at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$attemptComputation$3(NonBlockingReadActionImpl.java:468)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1137)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:76)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:152)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$1(ProgressIndicatorUtils.java:113)
at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:59)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:178)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:658)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:610)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:65)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:165)
at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:59)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:110)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:76)
at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.attemptComputation(NonBlockingReadActionImpl.java:486)
at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.executeSynchronously(NonBlockingReadActionImpl.java:422)
at com.intellij.openapi.application.impl.NonBlockingReadActionImpl.executeSynchronously(NonBlockingReadActionImpl.java:186)
at com.intellij.codeInsight.documentation.DocumentationManager$MyCollector.getDocumentation(DocumentationManager.java:1580)
at com.intellij.codeInsight.documentation.DocumentationManager.getDocumentationAndProvider(DocumentationManager.java:971)
at com.intellij.openapi.editor.EditorMouseHoverPopupManager$Context.calcInfo(EditorMouseHoverPopupManager.java:547)
at com.intellij.openapi.editor.EditorMouseHoverPopupManager.lambda$scheduleProcessing$7(EditorMouseHoverPopupManager.java:209)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:658)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:610)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:65)
at com.intellij.openapi.editor.EditorMouseHoverPopupManager.lambda$scheduleProcessing$8(EditorMouseHoverPopupManager.java:208)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request.runSafely(Alarm.java:376)
at com.intellij.util.Alarm$Request.run(Alarm.java:362)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:220)
at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:216)
at com.intellij.util.concurrency.BoundedTaskExecutor.access$200(BoundedTaskExecutor.java:27)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.execute(BoundedTaskExecutor.java:195)
at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:208)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:184)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.ClassNotFoundException: com.sun.javadoc.SeeTag PluginClassLoader[PluginDescriptor(name=Pegdown Doclet for IDEA, id=PegdownDocletIdea, path=/home/kgharibyan/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/203.7148.40.plugins/pegdown-doclet-idea-plugin-1.3-1.jar, version=1.3-1)] com.intellij.ide.plugins.cl.PluginClassLoader@636d5728
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:129)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 48 more