Knowledge base for software setup, errors, and daily tool work.

Fix Nginx Upstream Connection Refused Behind Cloudflare

If you see upstream connection refused in your Nginx error logs while using Cloudfla...

Fix Nginx 502 Bad Gateway with Docker and PHP-FPM

You have a Docker setup with Nginx proxying to a PHP-FPM container, and you're getting a 502 ...

How to Fix Chrome Sync Error 'Sign In Again'

What the Error Means

When Chrome displays 'Sign in again' in the sync settings, i...

Fix Edge Sync Stuck on Sign-In Loop

You open Microsoft Edge, try to sign in to sync your data, and it keeps looping back to the sign-...

Fix Chrome Black Screen on Mac: Hardware Acceleration Issue

You open Chrome on your Mac, and the screen goes black—or parts of the page are garbled. This oft...

Fix Cloudflare 522 Error: Increase Timeout Settings

If you see a Cloudflare 522 error, it means your origin server took too long to respond to Cloudf...