Subject: EnvFile plugin error (com.intellij.diagnostic.PluginException) after upgrading IntelliJ IDEA to 2025.3

[Riabchykova]

Dear EnvFile team,

After upgrading IntelliJ IDEA to version 2025.3, I’m receiving the following error, which prevents the plugin from working:
com.intellij.diagnostic.PluginException: Cannot create file types [Plugin: net.ashald.envfile]

Plugin version: 3.4.2
Full stack trace:
com.intellij.diagnostic.PluginException: Cannot create file types [Plugin: net.ashald.envfile] at com.intellij.serviceContainer.ComponentManagerImpl.createError(ComponentManagerImpl.kt:952) at com.intellij.openapi.extensions.impl.ExtensionPointImpl.processWithPluginDescriptor(ExtensionPointImpl.kt:1097) at com.intellij.openapi.extensions.ExtensionPointName.processWithPluginDescriptor(ExtensionPointName.kt:161) at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.initStandardFileTypes(FileTypeManagerImpl.java:320) at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.initializeComponent(FileTypeManagerImpl.java:686) at com.intellij.configurationStore.ComponentStoreImpl.initComponent$suspendImpl(ComponentStoreImpl.kt:176) at com.intellij.configurationStore.ComponentStoreImpl.initComponent(ComponentStoreImpl.kt) at com.intellij.configurationStore.ComponentStoreWithExtraComponents.initComponent(ComponentStoreWithExtraComponents.kt:43) at com.intellij.serviceContainer.ServiceInstanceInitializerKt.initializeService(ServiceInstanceInitializer.kt:128) at com.intellij.serviceContainer.ServiceInstanceInitializerKt.access$initializeService(ServiceInstanceInitializer.kt:1) at com.intellij.serviceContainer.ServiceInstanceInitializer.createInstance$suspendImpl(ServiceInstanceInitializer.kt:63) at com.intellij.serviceContainer.ServiceInstanceInitializer.createInstance(ServiceInstanceInitializer.kt) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1$1.invokeSuspend(LazyInstanceHolder.kt:165) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1$1.invoke(LazyInstanceHolder.kt) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1$1.invoke(LazyInstanceHolder.kt) at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:44) at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:166) at kotlinx.coroutines.BuildersKt.withContext(Unknown Source) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1.invokeSuspend(LazyInstanceHolder.kt:163) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1.invoke(LazyInstanceHolder.kt) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder$initialize$1.invoke(LazyInstanceHolder.kt) at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:20) at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:360) at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:134) at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:52) at kotlinx.coroutines.BuildersKt.launch(Unknown Source) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.initialize(LazyInstanceHolder.kt:148) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.access$initialize(LazyInstanceHolder.kt:15) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.tryInitialize(LazyInstanceHolder.kt:138) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.getInstance(LazyInstanceHolder.kt:96) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.getInstance$suspendImpl(LazyInstanceHolder.kt:84) at com.intellij.platform.instanceContainer.internal.LazyInstanceHolder.getInstance(LazyInstanceHolder.kt) at com.intellij.platform.instanceContainer.internal.InstanceContainerImpl.instance(InstanceContainerImpl.kt:68) at com.intellij.serviceContainer.ComponentManagerImpl.getServiceAsync(ComponentManagerImpl.kt:661) at com.intellij.platform.ide.bootstrap.AppServicePreloadingKt$postAppRegistered$1$fileTypeManagerJob$1.invokeSuspend(appServicePreloading.kt:155) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100) at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:610) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runDefaultDispatcherTask(CoroutineScheduler.kt:1194) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:906) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:775) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:762) Caused by: com.intellij.ide.plugins.StartupAbortedException: Cannot create file types at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.lambda$initStandardFileTypes$3(FileTypeManagerImpl.java:328) at com.intellij.openapi.extensions.impl.ExtensionPointImpl.processWithPluginDescriptor(ExtensionPointImpl.kt:1091) ... 40 more Caused by: com.intellij.diagnostic.PluginException: null [Plugin: net.ashald.envfile] ... 42 more Caused by: java.lang.UnsupportedOperationException at java.base/java.util.AbstractList.add(AbstractList.java:155) at java.base/java.util.AbstractList.add(AbstractList.java:113) at java.base/java.util.AbstractCollection.addAll(AbstractCollection.java:338) at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl$PluginFileTypeConsumer.register(FileTypeManagerImpl.java:1916) at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl$PluginFileTypeConsumer.consume(FileTypeManagerImpl.java:1884) at net.ashald.envfile.platform.EnvFileTypeFactory.createFileTypes(EnvFileTypeFactory.java:10) at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.lambda$initStandardFileTypes$3(FileTypeManagerImpl.java:322) ... 41 more

[FeehGb]

I’m experiencing the same issue after updating IntelliJ IDEA to version 2025.3.
The EnvFile plugin (version 3.4.2) stopped working and shows the exact same stack trace on startup:

com.intellij.diagnostic.PluginException: Cannot create file types [Plugin: net.ashald.envfile]
...
Caused by: java.lang.UnsupportedOperationException
    at java.base/java.util.AbstractList.add(AbstractList.java:155)

It was working normally before the upgrade.
Just confirming that the problem also occurs on my setup.

[pedoc]

Currently, it's compatible with the 2022 version. This issue may require updating the plugin SDK version.

[pedoc]

Currently, it's compatible with the 2022 version. This issue may require updating the plugin SDK version.

https://github.com/pedoc/EnvFile/releases fixed

[thosil]

Currently, it's compatible with the 2022 version. This issue may require updating the plugin SDK version.

https://github.com/pedoc/EnvFile/releases fixed

Thanks @pedoc but could you make a pr to this repo (as it's the one officially published), if @ashald is still maintaining this repo

[pedoc]

could you make a pr to this repo

I believe the author no longer has time to maintain this repository (the last commit was 2 years ago, and other pull requests are still pending).

Therefore, my fork currently merges other pull requests and adds some features I needed.

Furthermore, I cannot be held responsible to other users; this is merely a form of free sharing.