Checklists for software errors, setup, and tool workflows.

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Latest checklists

You set environment variables in a .env file next to your docker-compose.yml

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...

Fix Chrome Access Violation Error When Opening PDFs
You click a PDF link in Chrome and instead of the document, you see an error: Access Violatio...

Fix npm run build Failed Due to Webpack Configuration
When npm run build fails, the error often points to a webpack configuration issue. T...

Fix npm ENOENT Package.json Not Found & Permission Denied
You run npm install and get a wall of red: ENOENT: no such file or directory, ...

How to Fix ERR_CONNECTION_RESET on Chrome Mobile
When browsing on your phone, you might see the error ERR_CONNECTION_RESET in Chr...