Bug Report 2026/04/27

[codingkoaladev]

Describe the bug (*)

A clear and concise description of what the bug is.

java.lang.IllegalStateException: 'runBlockingCancellable' is forbidden in the Write Action because it may start a long-running computation. This can cause UI freezes.
Consider running this 'runBlockingCancellable' under a read action outside your Write Action'
	at com.intellij.openapi.progress.CoroutinesKt.assertBackgroundThreadAndNoWriteAction(coroutines.kt:606)
	at com.intellij.openapi.progress.CoroutinesKt.runBlockingCancellable(coroutines.kt:150)
	at com.intellij.openapi.progress.CoroutinesKt.runBlockingMaybeCancellable(coroutines.kt:214)
	at com.intellij.platform.eel.provider.EelProviderUtil.toEelApiBlocking(EelProvider.kt:195)
	at com.intellij.openapi.vfs.impl.local.LocalFileSystemEelUtil.readWholeFileIfNotTooLargeWithEel(util.kt:81)
	at com.intellij.openapi.vfs.impl.local.LocalFileSystemBase.readIfNotTooLarge(LocalFileSystemBase.java:447)
	at com.intellij.openapi.vfs.impl.local.LocalFileSystemImpl.readContent(LocalFileSystemImpl.java:484)
	at com.intellij.openapi.vfs.impl.local.LocalFileSystemImpl.lambda$new$1(LocalFileSystemImpl.java:79)
	at com.intellij.openapi.vfs.DiskQueryRelay.lambda$new$0(DiskQueryRelay.java:56)
	at com.intellij.openapi.vfs.DiskQueryRelay.accessDiskWithCheckCanceled(DiskQueryRelay.java:71)
	at com.intellij.openapi.vfs.impl.local.LocalFileSystemImpl.contentsToByteArray(LocalFileSystemImpl.java:378)
	at com.intellij.openapi.vfs.newvfs.persistent.PersistentFSImpl.contentsToByteArray(PersistentFSImpl.java:986)
	at com.intellij.openapi.vfs.newvfs.impl.VirtualFileImpl.contentsToByteArray(VirtualFileImpl.java:136)
	at com.intellij.openapi.vfs.newvfs.impl.VirtualFileImpl.contentsToByteArray(VirtualFileImpl.java:125)
	at com.intellij.openapi.fileEditor.impl.LoadTextUtil.loadText(LoadTextUtil.java:599)
	at com.intellij.openapi.fileEditor.impl.LoadTextUtil.loadText(LoadTextUtil.java:577)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerBase.loadText(FileDocumentManagerBase.java:116)
	at com.intellij.openapi.fileEditor.impl.FileDocumentManagerBase.getDocument(FileDocumentManagerBase.java:65)
	at com.intellij.openapi.fileEditor.FileDocumentManager.getDocument(FileDocumentManager.java:62)
	at com.intellij.psi.AbstractFileViewProvider.getDocument(AbstractFileViewProvider.java:182)
	at com.intellij.psi.impl.file.PsiDirectoryImpl.add(PsiDirectoryImpl.java:456)
	at com.magento.idea.magento2plugin.actions.generation.generator.util.FileFromTemplateGenerator.createFile(FileFromTemplateGenerator.java:115)
	at com.magento.idea.magento2plugin.actions.generation.generator.util.FileFromTemplateGenerator.lambda$generate$0(FileFromTemplateGenerator.java:64)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteActionBlocking(NestedLocksThreadingSupport.kt:997)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:1161)
	at com.magento.idea.magento2plugin.actions.generation.generator.util.FileFromTemplateGenerator.lambda$generate$1(FileFromTemplateGenerator.java:73)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.lambda$executeCommand$1(CoreCommandProcessor.java:143)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.runCommandTask(CoreCommandProcessor.java:409)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:158)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:81)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:69)
	at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:47)
	at com.magento.idea.magento2plugin.actions.generation.generator.util.FileFromTemplateGenerator.generate(FileFromTemplateGenerator.java:61)
	at com.magento.idea.magento2plugin.actions.generation.generator.util.FindOrCreateDiXml.execute(FindOrCreateDiXml.java:61)
	at com.magento.idea.magento2plugin.actions.generation.generator.PluginDiXmlGenerator.generate(PluginDiXmlGenerator.java:65)
	at com.magento.idea.magento2plugin.actions.generation.dialog.CreateAPluginDialog.onWriteActionOK(CreateAPluginDialog.java:180)
	at com.intellij.openapi.application.WriteAction.lambda$run$3(WriteAction.java:70)
	at com.intellij.openapi.application.impl.AppImplKt$rethrowCheckedExceptions$2.invoke(appImpl.kt:126)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteActionBlocking(NestedLocksThreadingSupport.kt:997)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:1183)
	at com.intellij.openapi.application.WriteAction.run(WriteAction.java:69)
	at com.magento.idea.magento2plugin.actions.generation.dialog.AbstractDialog.executeOnOk(AbstractDialog.java:119)
	at com.magento.idea.magento2plugin.actions.generation.dialog.AbstractDialog.onOK(AbstractDialog.java:134)
	at com.magento.idea.magento2plugin.actions.generation.dialog.AbstractDialog.doOKAction(AbstractDialog.java:144)
	at com.intellij.openapi.ui.DialogWrapper$OkAction.doAction(DialogWrapper.java:2126)
	at com.intellij.openapi.ui.DialogWrapper$DialogWrapperAction.actionPerformed(DialogWrapper.java:2077)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
	at java.desktop/javax.swing.AbstractButton$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:6631)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3400)
	at java.desktop/java.awt.Component.processEvent(Component.java:6396)
	at java.desktop/java.awt.Container.processEvent(Container.java:2260)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5008)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2318)
	at java.de

To Reproduce (*)

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior (*)

A clear and concise description of what you expected to happen.

Screenshots

If applicable, add screenshots to help explain your problem.

Please complete the following information: (*)

• OS: Windows 11.0
• PhpStorm/Intellij version: 2026.1.1
• Plugin Version: 2026.2.0

Additional context

Add any other context about the problem here.

[m2-assistant]

Hi @codingkoaladev. Thank you for your report.
To speed up processing of this issue, make sure that you provided sufficient information.
Add a comment to assign the issue: @magento I am working on this

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