Checklists for software errors, setup, and tool workflows.

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Latest checklists

Fixing NGINX 502 Bad Gateway in Docker Containers

Fixing NGINX 502 Bad Gateway in Docker Containers

When running NGINX as a reverse proxy in Docker, a 502 Bad Gateway error usually means NGINX cann...

How to Fix a Detached HEAD in Git Using SourceTree

How to Fix a Detached HEAD in Git Using SourceTree

If you open SourceTree and see a message like “You are in ‘detached HEAD’ state,” it means your w...

How to Fix Cloudflare 522 Error from Plugin Conflicts

How to Fix Cloudflare 522 Error from Plugin Conflicts

If you're seeing a Cloudflare 522 error, it usually means the connection between Cloudflare a...

Fix Cloudflare 522 Error by Disabling Proxy Temporarily

Fix Cloudflare 522 Error by Disabling Proxy Temporarily

If you see a Cloudflare 522 error, it means Cloudflare tried to reach your origin server but the ...

Fix Nginx Upstream Connection Refused Error

Fix Nginx Upstream Connection Refused Error

If you see upstream connection refused in your Nginx error logs, it means Nginx trie...

Git Merge Unrelated Histories: When and How to Use --allow-unrelated-histories

Git Merge Unrelated Histories: When and How to Use --allow-unrelated-histories

You try to merge two branches and get fatal: refusing to merge unrelated histories. ...

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