Checklists for software errors, setup, and tool workflows.

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Latest checklists

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

Fix Docker Compose Environment Variable Substitution Failed
When running docker compose up, you might see errors like failed to resolve co...

How to Fix Git LFS Push Error 403
You're trying to push a large file with Git LFS and get a 403 error. This usually means the s...

Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

How to Fix Git 'index.lock' File Exists Error
When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...

Fix Angular Breakpoints Not Hit in VS Code
You set a breakpoint in an Angular component or service, start debugging in VS Code, and the brea...