Checklists for software errors, setup, and tool workflows.

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Fix Git 'index.lock file exists' Error

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

How to Fix Git Unrelated Histories Error When Merging Branches
You try to merge two branches, and Git stops with: fatal: refusing to merge unrelated histo...

How to Fix Chrome Extensions Not Loading or Grayed Out
You open Chrome, click the puzzle icon, and see your extensions grayed out or missing. They don&#...

Fix 'docker compose port already bound to host' Error
When running docker compose up, you might see an error like Error: starting co...

Fix Docker Nginx 502 Bad Gateway with MySQL
You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Fix Nginx HTTP to HTTPS Redirect Loop Error
You set up an HTTP-to-HTTPS redirect in nginx, but now your browser shows a redirect loop error. ...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git 'index.lock file exists' Error

How to Fix Git Unrelated Histories Error When Merging Branches

How to Fix Chrome Extensions Not Loading or Grayed Out

Fix 'docker compose port already bound to host' Error

Fix Docker Nginx 502 Bad Gateway with MySQL

Fix Nginx HTTP to HTTPS Redirect Loop Error

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