Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You run docker compose up and get an error like Error: Port 3306 is already al...

Fix DNS Probe Finished NXDOMAIN Not Working on WiFi
If you see "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome while connected to WiFi, your browser ...

Fix Git Lock File Not Deleted After Crash
If Git reports a lock file error after a crash, it usually means a previous Git operation was int...

Fix Chrome Sync Not Working with Family Link
If Chrome sync stops working on a child's device managed by Google Family Link, it's usua...

How to Manually Remove a Stuck Git index.lock File
If Git operations suddenly fail with an error like fatal: Unable to create 'path/.git/i...

Docker Container Exits Immediately on Mac: Fixes
You start a Docker container on your Mac, and it stops within seconds. The container exits immedi...