Logged into TMC with IntelliJ, but cannot see project files

[ralferik]

I've enabled Classic UI, I logged into my MOOC fi account and selected MOOC 2025 course, but cannot see anything currently.

Got this in my console:

Exception while notifying com.intellij.ide.startup.impl.StartupManagerImpl$Companion$addActivityEpListener$1@4787915a

com.intellij.diagnostic.PluginException: Cannot create extension (class=fi.helsinki.cs.tmc.intellij.actions.StartupEvent) [Plugin: fi.helsinki.cs.tmc]
at com.intellij.serviceContainer.ComponentManagerImpl.createError(ComponentManagerImpl.kt:989)
at com.intellij.openapi.extensions.impl.XmlExtensionAdapter.doCreateInstance(XmlExtensionAdapter.kt:73)
at com.intellij.openapi.extensions.impl.XmlExtensionAdapter.createInstance(XmlExtensionAdapter.kt:33)
at com.intellij.openapi.extensions.impl.ExtensionPointImpl.notifyListeners(ExtensionPointImpl.kt:665)
at com.intellij.openapi.extensions.impl.ExtensionPointImpl.registerExtensions$lambda$36(ExtensionPointImpl.kt:881)
at com.intellij.ide.plugins.DynamicPlugins.loadPluginWithoutProgress$lambda$51(DynamicPlugins.kt:965)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteAction$lambda$13(AnyThreadWriteThreadingSupport.kt:613)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteAction$lambda$15(AnyThreadWriteThreadingSupport.kt:623)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithTemporaryThreadLocal(AnyThreadWriteThreadingSupport.kt:204)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteAction(AnyThreadWriteThreadingSupport.kt:623)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteAction(AnyThreadWriteThreadingSupport.kt:613)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:988)
at com.intellij.ide.plugins.DynamicPlugins.loadPluginWithoutProgress(DynamicPlugins.kt:946)
at com.intellij.ide.plugins.DynamicPlugins.doLoadPlugin$lambda$48(DynamicPlugins.kt:918)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:229)
at com.intellij.platform.diagnostic.telemetry.helpers.TraceKt.use(trace.kt:43)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:228)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$14(CoreProgressManager.java:680)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:755)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:711)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:679)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:77)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:209)
at com.intellij.openapi.progress.util.PotemkinProgress.runInSwingThread(PotemkinProgress.java:158)
at com.intellij.ide.plugins.DynamicPlugins.doLoadPlugin(DynamicPlugins.kt:917)
at com.intellij.ide.plugins.DynamicPlugins.loadPlugin$lambda$45(DynamicPlugins.kt:898)
at com.intellij.ide.plugins.DynamicPlugins.runProcess(DynamicPlugins.kt:158)
at com.intellij.ide.plugins.DynamicPlugins.loadPlugin(DynamicPlugins.kt:897)
at com.intellij.ide.plugins.DynamicPlugins.loadPlugin$default(DynamicPlugins.kt:895)
at com.intellij.ide.plugins.DynamicPlugins.loadPlugin(DynamicPlugins.kt)
at com.intellij.ide.plugins.PluginInstaller.installAndLoadDynamicPlugin(PluginInstaller.java:411)
at com.intellij.ide.plugins.newui.MyPluginModel.lambda$apply$0(MyPluginModel.java:179)
at com.intellij.ide.plugins.InstalledPluginsState.trackPluginInstallation(InstalledPluginsState.java:187)
at com.intellij.ide.plugins.newui.MyPluginModel.apply(MyPluginModel.java:178)
at com.intellij.ide.plugins.PluginManagerConfigurable.apply(PluginManagerConfigurable.java:2035)
at com.intellij.openapi.options.ex.ConfigurableWrapper.apply(ConfigurableWrapper.java:190)
at com.intellij.openapi.options.newEditor.ConfigurableEditor.apply(ConfigurableEditor.java:314)
at com.intellij.openapi.options.newEditor.SettingsEditor$7.apply(SettingsEditor.java:247)
at com.intellij.openapi.options.newEditor.ConfigurableEditor$2.actionPerformed(ConfigurableEditor.java:62)
at com.intellij.openapi.options.newEditor.SettingsDialog$ApplyActionWrapper.actionPerformed(SettingsDialog.java:316)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
at com.intellij.openapi.ui.DialogWrapper$3.fireActionPerformed(DialogWrapper.java:861)
at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2314)
at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:407)
at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6673)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3394)
at java.desktop/java.awt.Component.processEvent(Component.java:6438)
at java.desktop/java.awt.Container.processEvent(Container.java:2266)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5043)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4871)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4963)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4577)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4518)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2810)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4871)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:783)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:728)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:98)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:755)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:753)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:752)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:585)
at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.kt:530)
at com.intellij.ide.IdeEventQueue._dispatchEvent$lambda$16(IdeEventQueue.kt:473)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction$lambda$6(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithTemporaryThreadLocal(AnyThreadWriteThreadingSupport.kt:204)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runPreventiveWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:218)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:473)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10$lambda$9(IdeEventQueue.kt:307)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:864)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10(IdeEventQueue.kt:306)
at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$3(IdeEventQueue.kt:958)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:109)
at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:958)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12(IdeEventQueue.kt:301)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:341)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:121)
at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:191)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:236)
at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:234)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:319)
at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:234)
at java.desktop/java.awt.Dialog.show(Dialog.java:1079)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:871)
at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:458)
at com.intellij.openapi.ui.DialogWrapper.doShow(DialogWrapper.java:1815)
at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1764)
at com.intellij.ide.actions.ShowSettingsUtilImpl$Companion.showInternal(ShowSettingsUtilImpl.kt:73)
at com.intellij.ide.actions.ShowSettingsUtilImpl$Companion.showSettings(ShowSettingsUtilImpl.kt:56)
at com.intellij.ide.actions.ShowSettingsUtilImpl.showSettingsDialog(ShowSettingsUtilImpl.kt:129)
at com.intellij.ide.actions.ShowSettingsAction.perform(ShowSettingsAction.java:61)
at com.intellij.ui.mac.MacOSApplicationProviderKt.initMacApplication$lambda$3$lambda$2(MacOSApplicationProvider.kt:69)
at com.intellij.ui.mac.MacOSApplicationProviderKt$submit$2.invokeSuspend$lambda$0(MacOSApplicationProvider.kt:170)
at com.intellij.openapi.application.CoroutinesKt.writeIntentReadAction$lambda$1$lambda$0(coroutines.kt:339)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction$lambda$6(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithTemporaryThreadLocal(AnyThreadWriteThreadingSupport.kt:204)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:222)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:1009)
at com.intellij.openapi.application.CoroutinesKt.writeIntentReadAction$lambda$1(coroutines.kt:339)
at com.intellij.openapi.progress.CoroutinesKt.blockingContextInner(coroutines.kt:345)
at com.intellij.openapi.progress.CoroutinesKt$blockingContext$2.invokeSuspend(coroutines.kt:237)
at com.intellij.openapi.progress.CoroutinesKt$blockingContext$2.invoke(coroutines.kt)
at com.intellij.openapi.progress.CoroutinesKt$blockingContext$2.invoke(coroutines.kt)
at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:62)
at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:261)
at com.intellij.openapi.progress.CoroutinesKt.blockingContext(coroutines.kt:236)
at com.intellij.openapi.application.CoroutinesKt.writeIntentReadAction(coroutines.kt:338)
at com.intellij.ui.mac.MacOSApplicationProviderKt$submit$2.invokeSuspend(MacOSApplicationProvider.kt:167)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
at com.intellij.openapi.application.impl.EdtCoroutineDispatcher$wrapWithLocking$2$1.run(EdtCoroutineDispatcher.kt:71)
at com.intellij.openapi.application.WriteIntentReadAction.lambda$run$0(WriteIntentReadAction.java:24)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction$lambda$6(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithTemporaryThreadLocal(AnyThreadWriteThreadingSupport.kt:204)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:274)
at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:222)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:1009)
at com.intellij.openapi.application.WriteIntentReadAction.compute(WriteIntentReadAction.java:55)
at com.intellij.openapi.application.WriteIntentReadAction.run(WriteIntentReadAction.java:23)
at com.intellij.openapi.application.impl.EdtCoroutineDispatcher$wrapWithLocking$$inlined$Runnable$2.run(Runnable.kt:15)
at com.intellij.openapi.application.impl.DispatchedRunnable.run(DispatchedRunnable.kt:42)
at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:240)
at com.intellij.openapi.application.TransactionGuardImpl.access$100(TransactionGuardImpl.java:25)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:222)
at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:117)
at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:43)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:781)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:728)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:750)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:585)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:482)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10$lambda$9(IdeEventQueue.kt:307)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:864)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10(IdeEventQueue.kt:306)
at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$3(IdeEventQueue.kt:958)
at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:109)
at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:958)
at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12(IdeEventQueue.kt:301)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:341)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)
Caused by: com.intellij.diagnostic.PluginException: Cannot create class fi.helsinki.cs.tmc.intellij.actions.StartupEvent (classloader=PluginClassLoader(plugin=PluginDescriptor(name=TMC Plugin for Intellij, id=fi.helsinki.cs.tmc, descriptorPath=plugin.xml, path=~/Library/Application Support/JetBrains/IntelliJIdea2025.1/plugins/tmc-plugin-intellij, version=2.0.2, package=null, isBundled=false), packagePrefix=null, state=active, parents=PluginDescriptor(name=IDEA CORE, id=com.intellij, moduleName=intellij.platform.vcs.impl, descriptorPath=intellij.platform.vcs.impl.xml, path=/Applications/IntelliJ IDEA.app/Contents/lib, version=251.26094.121, package=null, isBundled=true), PluginDescriptor(name=IDEA CORE, id=com.intellij, moduleName=intellij.platform.vcs.log.impl, descriptorPath=intellij.platform.vcs.log.impl.xml, path=/Applications/IntelliJ IDEA.app/Contents/lib, version=251.26094.121, package=null, isBundled=true), PluginDescriptor(name=IDEA CORE, id=com.intellij, moduleName=intellij.platform.vcs.dvcs.impl, descriptorPath=intellij.platform.vcs.dvcs.impl.xml, path=/Applications/IntelliJ IDEA.app/Contents/lib, version=251.26094.121, package=null, isBundled=true), PluginDescriptor(name=IDEA CORE, id=com.intellij, moduleName=intellij.platform.collaborationTools, descriptorPath=intellij.platform.collaborationTools.xml, path=/Applications/IntelliJ IDEA.app/Contents/lib, version=251.26094.121, package=null, isBundled=true), PluginDescriptor(name=Java, id=com.intellij.java, descriptorPath=plugin.xml, path=/Applications/IntelliJ IDEA.app/Contents/plugins/java, version=251.26094.121, package=null, isBundled=true), ))
at com.intellij.serviceContainer.ComponentManagerImpl.doInstantiateClass(ComponentManagerImpl.kt:927)
at com.intellij.serviceContainer.ComponentManagerImpl.instantiateClass(ComponentManagerImpl.kt:903)
at com.intellij.openapi.extensions.impl.SimpleConstructorInjectionAdapter.instantiateClass(XmlExtensionAdapter.kt:102)
at com.intellij.openapi.extensions.impl.XmlExtensionAdapter.doCreateInstance(XmlExtensionAdapter.kt:52)
... 160 more
Caused by: java.lang.ExceptionInInitializerError
at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:72)
at org.slf4j.impl.StaticLoggerBinder.(StaticLoggerBinder.java:45)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
at fi.helsinki.cs.tmc.intellij.actions.StartupEvent.(StartupEvent.java:41)
at java.base/jdk.internal.misc.Unsafe.allocateInstance(Native Method)
at java.base/java.lang.invoke.DirectMethodHandle.allocateInstance(DirectMethodHandle.java:501)
at com.intellij.serviceContainer.ComponentManagerImpl.findConstructorAndInstantiateClass(ComponentManagerImpl.kt:909)
at com.intellij.serviceContainer.ComponentManagerImpl.doInstantiateClass(ComponentManagerImpl.kt:918)
... 163 more
Caused by: java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND bound slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details.
at org.slf4j.impl.Log4jLoggerFactory.(Log4jLoggerFactory.java:54)
... 175 more