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

Fix net::ERR_CERT_AUTHORITY_INVALID on Chrome in Linux Terminal

When you see net::ERR_CERT_AUTHORITY_INVALID in Chrome on Linux, it usually means th...

Docker Compose Environment Variable Not Set in Container: Fixes

You ran docker-compose up, but the environment variable you defined isn't availa...

Cloudflare 522 Error Checklist: Causes and Fixes

If you see a 522 Connection Timed Out error when visiting your site, Cloudflare ...

Fixing Nginx Permission Denied for Access Log

When Nginx reports 'permission denied' while trying to write to the access log, the error...

Chrome Sync Not Working with VPN: Fixes and Checks

If Chrome sync stops working after you turn on a VPN, you're not alone. The VPN can interfere...

Fix Nginx Upstream Connection Refused in Proxy Pass