Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaS...

Fix 'nginx configuration test failed invalid parameter'
When running nginx -t to test configuration, seeing "nginx: [emerg] inva...

How to Fix Node Version Mismatch in a Project
You cloned a project, ran npm install, and got errors about engine incompatibility. ...

Fix Node Sass Build Failure: Environment Variable Errors
When you run npm install or a build script and see an error like Node Sass doe...

Fix VSCode IntelliSense Not Working for PowerShell
If you're editing PowerShell scripts in VS Code and IntelliSense stops showing suggestions (n...

Fix Docker Compose Port Already Allocated Error
When running docker-compose up, you may see an error like Error starting userl...