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

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

VSCode IntelliSense Not Working for Dart/Flutter: Fixes

You're writing Dart or Flutter code in VSCode, but IntelliSense (autocomplete, suggestions, g...

Cloudflare Origin Certificate Troubleshooting Steps

If your website shows SSL errors or users see "This site can’t provide a secure connection,&#...

Windows 11 Update Stuck at 0% Due to Corrupt Files: Fixes

You start a Windows 11 update, and it hangs at 0% for minutes or hours. Corrupt system files are ...

Fixing Node Sass Build Failures on Linux

Setting Up Cloudflare Wildcard Subdomains for Multiple Sites

If you manage multiple sites or services on different subdomains (like app.example.com, blog.exam...