Checklists for software errors, setup, and tool workflows.

Fix Nginx Redirect Loop After SSL Setup

You've set up SSL on your Nginx server, but now visitors get stuck in a redirect loop—HTTP→HT...

Cloudflare Origin Certificate Setup Checklist

If you're setting up a Cloudflare origin certificate to encrypt traffic between Cloudflare an...

Docker Container Exits Immediately: Fix with Restart Policy

You start a Docker container, it runs for a second, then stops. No error messages, just a quick e...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...

How to Fix Cloudflare Error 521: Web Server Is Down

Cloudflare error 521 means your origin web server is refusing the connection from Cloudflare'...

How to Fix Git Clone Connection Timed Out Error

When you run git clone and see a connection timed out error, it usually...