microsoft / microsoft/azure-tools-for-java

[IntelliJ] Uncaught Exception java.lang.NullPointerException: Cannot invoke "com.intellij.openapi.vfs.VirtualFile.getPath()" because the return value of "com.intellij.openapi.vfs.VirtualFile.getParent()" is null

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Dominant language
Java
Stars
262
Forks
185
Avg merge
2d 21h
Merged PRs (30d)
1

Description

IntelliJ build version: 2026.1.4 IU-261.26222.65
OS: Windows 11
JDK: JetBrains s.r.o. 25.0.3
Plugin version: 3.97.6-2026.1
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,8,8,2560x1392,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]

Error message:

IdeaLoggingEvent[message=null, throwable=java.lang.NullPointerException: Cannot invoke "com.intellij.openapi.vfs.VirtualFile.getPath()" because the return value of "com.intellij.openapi.vfs.VirtualFile.getParent()" is null
	at com.microsoft.azure.toolkit.intellij.container.model.DockerImage.<init>(DockerImage.java:57)
	at com.microsoft.azure.toolkit.intellij.containerregistry.runner.ContainerRegistryDockerfileActionsProvider.getActions(ContainerRegistryDockerfileActionsProvider.java:17)
	at com.microsoft.azure.toolkit.intellij.containerregistry.runner.DockerRunLineMarkerProvider.lambda$getDockerfileActions$2(DockerRunLineMarkerProvider.java:105)
	at com.microsoft.azure.toolkit.intellij.containerregistry.runner.DockerRunLineMarkerProvider.getDockerfileActions(DockerRunLineMarkerProvider.java:108

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at DockerImage.java:57, then follow the call chain through ContainerRegistryDockerfileActionsProvider.java:17 and DockerRunLineMarkerProvider.java:105-108. Reproduce the IntelliJ Dockerfile action scenario described by the stack trace and verify that it no longer raises an uncaught NullPointerException when the VirtualFile has no parent.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure, docker, java
Domain
tooling
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
65/100

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