Checklists for software errors, setup, and tool workflows.

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Fixing Git Authentication Failed in VS Code

If you see "git authentication failed" when pulling, pushing, or cloning in VS Code, the ...

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...

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

How to Fix Cloudflare 522 Error When Website Won't Load

Cloudflare 522 error means your origin server is not responding within the allowed time. This usu...

Fix VS Code Git Auth Failed with Personal Access Token

If you're using a personal access token (PAT) for Git authentication in VS Code and seeing &#...