Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You run npm run build and get an error like Error: Missing required environmen...

Fix VSCode Terminal Not Opening with Git Bash
You open Visual Studio Code, press Ctrl+` to bring up the terminal, and expect Git Bash. Instead,...

Nginx Configuration Test Failed: Fix Server Block Errors
When you run nginx -t and see "test failed" with a server block error, it us...

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

Fixing Python Requests Connection Timeout Errors
When your Python script using the requests library hangs or raises a ConnectTi...

Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...