Checklists for software errors, setup, and tool workflows.

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Fix npm run build Failure from Missing Env Variables

You run npm run build and get an error like Error: Missing required environmen...

Docker Network Not Found in Swarm Mode: Fixes & Causes
When running Docker in Swarm mode, you might see an error like network "xyz" not fo...

Fix Nginx Redirect Loop After SSL Certificate Install
You installed an SSL certificate, and now your site redirects in a loop. The browser shows 'E...

Fix Git SSL Certificate 'Unable to Get Local Issuer' After Update
After updating Git or your operating system, you may encounter the error fatal: unable to g...

Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix VSCode Terminal Permission Denied in Python venv
If you see bash: /path/to/venv/bin/activate: Permission denied when trying to activa...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix npm run build Failure from Missing Env Variables

Docker Network Not Found in Swarm Mode: Fixes & Causes

Fix Nginx Redirect Loop After SSL Certificate Install

Fix Git SSL Certificate 'Unable to Get Local Issuer' After Update

Fix Nginx Upstream Connection Refused in Proxy Pass

Fix VSCode Terminal Permission Denied in Python venv

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