Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...

You run git push and get an error like ! [rejected] main -> main (non-fast-...

Fix VSCode Permission Denied Extension Errors
If you see a "permission denied" error when trying to install or update an extension in V...

Fix Docker Build Context Canceled in Git Bash on Windows
If you're running Docker commands from Git Bash on Windows and see an error like contex...

Fix Firefox Secure Connection Failed on Windows 10
You're browsing in Firefox on Windows 10 and get a full-page error: Secure Connection Fai...

Fix Cloudflare 522 Error with Nginx Configuration
You're seeing a Cloudflare 522 error: connection timed out between Cloudflare and your origin...