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

Fix Nginx 502 Bad Gateway on Docker Ubuntu

Fix Python Memory Errors When Processing Large Files

If you've seen MemoryError while trying to read or process a file that's lar...

Fix Cloudflare SSL Full Strict Certificate Mismatch Error

If you set Cloudflare SSL/TLS encryption mode to Full (strict) and see a certificate mismatch err...

Fix Chrome Hardware Acceleration Black Screen in Windows 11

If Chrome shows a black screen on Windows 11, especially after an update or when playing video, h...

How to Enable Network Discovery for Shared Folder Access

When you can't see other computers in File Explorer's Network section, or you get an erro...

Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...