Checklists for software errors, setup, and tool workflows.

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Latest checklists

When you open the VS Code terminal on Windows and type python, you might see &...

Fix Docker Build Context Canceled by Excluding Files
You run docker build and after a long wait see context canceled. This o...

Fix Git 'index.lock' Error in VS Code
If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Chrome Sync Not Working with VPN: Fixes and Checks
If Chrome sync stops working after you turn on a VPN, you're not alone. The VPN can interfere...

How to Speed Up Cloudflare DNS Propagation
When you change DNS records in Cloudflare, propagation can sometimes feel slow. While you can'...

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