[Error report] java.lang.IllegalStateException: vaadin-hotswapagent-runner can only run Java configurations

[purplezimmermann]

-- on Debug using HotswapAgent w/default Gradle [bootRun] task configuration selected ...

---

Plugin version: 1.3.6
IDE version: IntelliJ IDEA 2024.2.4
OS: Windows 11

Stacktrace:

java.lang.IllegalStateException: vaadin-hotswapagent-runner can only run Java configurations
	at com.vaadin.plugin.hotswapagent.HotswapAgentRunner.execute(HotswapAgentRunner.kt:23)
	at com.intellij.execution.impl.ExecutionManagerImpl.executeConfiguration(ExecutionManagerImpl.kt:819)
	at com.intellij.execution.impl.ExecutionManagerImpl$executeConfiguration$1$2.invoke(ExecutionManagerImpl.kt:752)
	at com.intellij.execution.impl.ExecutionManagerImpl$executeConfiguration$1$2.invoke(ExecutionManagerImpl.kt:748)
	at com.intellij.execution.impl.ExecutionManagerImpl.executeConfiguration$lambda$13$lambda$12(ExecutionManagerImpl.kt:748)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$safeTransferToEdt$7(NonBlockingReadActionImpl.java:717)
	at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:229)
	at com.intellij.openapi.application.TransactionGuardImpl.access$100(TransactionGuardImpl.java:22)
	at com.intellij.openapi.application.TransactionGuardImpl$1.run(TransactionGuardImpl.java:191)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runIntendedWriteActionOnCurrentThread$lambda$1(AnyThreadWriteThreadingSupport.kt:184)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:84)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runIntendedWriteActionOnCurrentThread(AnyThreadWriteThreadingSupport.kt:183)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:836)
	at com.intellij.openapi.application.impl.ApplicationImpl$2.run(ApplicationImpl.java:424)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithImplicitRead(AnyThreadWriteThreadingSupport.kt:122)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWithImplicitRead(ApplicationImpl.java:1162)
	at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:78)
	at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:119)
	at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:41)
	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:696)
	at com.intellij.ide.IdeEventQueue._dispatchEvent$lambda$16(IdeEventQueue.kt:590)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithoutImplicitRead(AnyThreadWriteThreadingSupport.kt:117)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:590)
	at com.intellij.ide.IdeEventQueue.access$_dispatchEvent(IdeEventQueue.kt:73)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1$1.compute(IdeEventQueue.kt:357)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1$1.compute(IdeEventQueue.kt:356)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:843)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1.invoke(IdeEventQueue.kt:356)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1.invoke(IdeEventQueue.kt:351)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke$lambda$0(IdeEventQueue.kt:1035)
	at com.intellij.openapi.application.WriteIntentReadAction.lambda$run$0(WriteIntentReadAction.java:24)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:84)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:910)
	at com.intellij.openapi.application.WriteIntentReadAction.compute(WriteIntentReadAction.java:55)
	at com.intellij.openapi.application.WriteIntentReadAction.run(WriteIntentReadAction.java:23)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke(IdeEventQueue.kt:1035)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke(IdeEventQueue.kt:1035)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$1(IdeEventQueue.kt:1036)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:106)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1036)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$10(IdeEventQu

[Artur-]

Same as #133 . You cannot run Maven or Gradle tasks using hotswap agent, you need to run the Java application file

[purplezimmermann]

Thanks, @Artur- for the "temporary workaround" :)

[Artur-]

It's not really a workaround, you will have much fewer problems if you run the Java class instead of a Gradle or Maven target when developing. Not sure we can even make hotswapping work when running through Gradle/Maven as it is then the build target that decides how the application is launched

[MarcinVaadin]

Will be covered in #144, closing as duplicate