Checklists for software errors, setup, and tool workflows.

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Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix ERR_NAME_NOT_RESOLVED DNS Configuration Error
When you see ERR_NAME_NOT_RESOLVED in your browser, it means the DNS lookup for ...

Fix Windows Update Error 0x80070002
Windows Update error 0x80070002 usually appears when the update process can't find a required...

Docker Container Exits Immediately After Entrypoint
You run a Docker container and it stops within seconds. The logs show your entrypoint script ran,...

Fix VS Code Breakpoints Not Hit in Multi-Root Workspace
If you're using a multi-root workspace in VS Code and finding that breakpoints in some folder...

Fix npm 'package.json not found' Error in Subdirectories
You're working in a subdirectory of your project, run npm install or npm r...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Nginx Upstream Connection Refused in Proxy Pass

Fix ERR_NAME_NOT_RESOLVED DNS Configuration Error

Fix Windows Update Error 0x80070002

Docker Container Exits Immediately After Entrypoint

Fix VS Code Breakpoints Not Hit in Multi-Root Workspace

Fix npm 'package.json not found' Error in Subdirectories

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