Checklists for software errors, setup, and tool workflows.

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How to Resolve Git Merge Conflicts on the Same Line

You run git merge and get a conflict marker on a single line. The file shows both ve...

Checklist for Nginx Configuration Test Failure

When you run nginx -t and get a failure, the server won't reload or restart. Thi...

How to Fix Git 'index.lock' File Exists Error

When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...

How to Fix Cloudflare Error 521: Web Server Is Down

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

Fix Node Sass Build Failure Due to Node Version Mismatch

You run npm install and see an error like Node Sass does not yet support your ...

VS Code Debugger Not Hitting Breakpoints in Node.js: Fixes
You set breakpoints in your Node.js code, start the debugger, and the execution runs straight thr...