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 &#...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Fix VS Code Git Authentication Failed for GitLab

If you see "Git authentication failed" in VS Code when pushing or pulling from a GitLab r...

Fix Chrome Certificate Error: Invalid Authority SSL Certificate

If Chrome shows 'Your connection is not private' with 'NET::ERR_CERT_AUTHORITY_INVALI...

Fix VS Code Permission Denied After Update

After updating Visual Studio Code, you might see 'permission denied' errors when trying t...

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...