Checklists for software errors, setup, and tool workflows.

How to Fix Nginx 502 Bad Gateway in Docker

If you're running Nginx as a reverse proxy inside Docker and seeing a 502 Bad Gateway error, ...

Python Virtual Environment Not Activating on Mac: Fixes

You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...

Docker Compose 'Network Not Found' Error Fix

When running docker compose up, you might see an error like:

network "my...

VS Code IntelliSense Not Working for Python: Common Fixes

You open a Python file in VS Code, start typing, and no suggestions appear. IntelliSense is silen...

VSCode IntelliSense Not Working for Dart/Flutter: Fixes

You're writing Dart or Flutter code in VSCode, but IntelliSense (autocomplete, suggestions, g...