Checklists for software errors, setup, and tool workflows.

Fix Chrome Certificate Error: Invalid Authority SSL Certificate

If Chrome shows 'Your connection is not private' with 'NET::ERR_CERT_AUTHORITY_INVALI...

How to Create a package.json for Your npm Project

If you're starting a Node.js project, you'll need a package.json file. This ...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Docker Container Exits Immediately with Exit Code 137

You start a Docker container, and it exits almost immediately with exit code 137. This usually me...

Fix pnpm ERR_PNPM_OUTDATED_LOCKFILE Lockfile Error

When running pnpm install or pnpm update, you may see:

ER...