java.lang.Throwable: startNotify called already

[mdddj]

Please file this bug report at https://github.com/flutter/flutter-intellij/issues/new.

---

What happened

(please describe what you were doing when this exception occurred)

Version information

Android Studio Quail 1 | 2026.1.1 Canary 5 • Flutter plugin io.flutter 93.0.0-dev.20260518-dbd7892 • Dart plugin 506.0.0-dev.20260519-eb39356

Flutter 3.44.0 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 559ffa3f75 (5 days ago) • 2026-05-15 14:13:13 -0700
Engine • hash fcf463a2242790d1fdcd9d044f533080f5022e18 (revision 4c525dac5e) (4 days ago) • 2026-05-15 19:00:04.000Z
Tools • Dart 3.12.0 • DevTools 2.57.0

Exception

null

java.lang.Throwable: startNotify called already
	at com.intellij.openapi.diagnostic.Logger.error(Logger.java:375)
	at com.intellij.execution.process.ProcessHandler.startNotify(ProcessHandler.java:72)
	at com.intellij.execution.process.BaseOSProcessHandler.startNotify(BaseOSProcessHandler.java:92)
	at com.intellij.xdebugger.impl.XDebuggerManagerImpl.startSession(XDebuggerManagerImpl.java:234)
	at com.intellij.xdebugger.impl.XDebugSessionBuilderImpl.startSession(XDebugSessionBuilderImpl.kt:80)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at io.flutter.run.FlutterDebugSessionUtils.startBuilderSession(FlutterDebugSessionUtils.java:116)
	at io.flutter.run.FlutterDebugSessionUtils.startSessionAndGetDescriptor(FlutterDebugSessionUtils.java:58)
	at io.flutter.run.FlutterDebugSessionUtils.startSessionAndGetDescriptor(FlutterDebugSessionUtils.java:46)
	at io.flutter.run.LaunchState.createDebugSession(LaunchState.java:237)
	at io.flutter.run.LaunchState.launch(LaunchState.java:164)
	at io.flutter.run.LaunchState$Runner.doExecute(LaunchState.java:438)
	at com.intellij.execution.runners.GenericProgramRunner.execute$lambda$0(GenericProgramRunner.kt:20)
	at com.intellij.execution.impl.ExecutionManagerImpl.startRunProfile$lambda$0(ExecutionManagerImpl.kt:275)
	at com.intellij.execution.impl.ExecutionManagerImpl.doStartRunProfile$lambda$1(ExecutionManagerImpl.kt:342)
	at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:236)
	at com.intellij.openapi.application.TransactionGuardImpl.access$100(TransactionGuardImpl.java:22)
	at com.intellij.openapi.application.TransactionGuardImpl$1.run(TransactionGuardImpl.java:198)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteIntentReadAction(NestedLocksThreadingSupport.kt:705)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:1094)
	at com.intellij.openapi.application.impl.ApplicationImpl$7.lambda$run$0(ApplicationImpl.java:648)
	at com.intellij.concurrency.ThreadContext.installThreadContext(threadContext.kt:305)
	at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:646)
	at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:192)
	at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:192)
	at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:198)
	at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:192)
	at com.intellij.util.concurrency.ContextRunnable.lambda$run$0(ContextRunnable.java:26)
	at com.intellij.concurrency.ThreadContext.resetThreadContext(threadContext.kt:294)
	at com.intellij.util.concurrency.ContextRunnable.run(ContextRunnable.java:25)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1$1$0(NonBlockingFlushQueue.kt:334)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:928)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1$1(NonBlockingFlushQueue.kt:333)
	at com.intellij.concurrency.ThreadContext.resetThreadContext(threadContext.kt:294)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1(NonBlockingFlushQueue.kt:330)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.tryRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:747)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent(NonBlockingFlushQueue.kt:326)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.flushNow(NonBlockingFlushQueue.kt:305)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.FLUSH_NOW$lambda$0(NonBlockingFlushQueue.kt:167)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:720)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:573)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0$0$0(IdeEventQueue.kt:377)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$0(IdeEventQueue.kt:1110)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:106)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1110)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0(IdeEventQueue.kt:375)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:415)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)

Flutter log

(flutter.log not found)

[pq]

Does this happen consistently? Is it a new issue? Any tips on a reproduction?

Thanks!