Checklists for software errors, setup, and tool workflows.

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Docker Compose Port Already Allocated: Checklist

You run docker-compose up and get an error like Error starting userland proxy:...

Fix DNS Probe Finished NXDOMAIN for a Specific Website
If you see the error "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome when trying to visit a speci...

Fix VSCode IntelliSense Not Working with TypeScript
You open a TypeScript file in VSCode, start typing, and get no autocomplete, no hover info, no er...

Fix DNS Probe Finished NXDOMAIN After Changing DNS
After updating your DNS settings—perhaps to use Google Public DNS or Cloudflare—you might see the...

Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...

Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Docker Compose Port Already Allocated: Checklist

Fix DNS Probe Finished NXDOMAIN for a Specific Website

Fix VSCode IntelliSense Not Working with TypeScript

Fix DNS Probe Finished NXDOMAIN After Changing DNS

Fix Nginx Upstream Connection Refused in Docker

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

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