Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You set up a redirect in nginx, but now your browser shows 'redirect loop' or 'too ma...

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

Fix 'docker network not found' After Prune
If you run docker network prune and later see errors like network not found

Fix Git Clone Connection Timed Out Due to Proxy Settings
You run git clone https://github.com/example/repo.git and after a long pause you get...

Docker Build Context Canceled: Causes and Fixes
When running docker build, you might see an error like build context canceled<...

Python Virtual Environment Not Activating: Common Fixes
You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...