Checklists for software errors, setup, and tool workflows.

Fixing Python Memory Errors When Processing Large Files on 64-bit

If you're hitting a MemoryError in Python while reading or processing a large fi...

How to Stop Chrome from Crashing at Launch

If Chrome crashes immediately when you try to open it, you're not alone. This usually happens...

Git index.lock File Exists Even After Deleting: Fixes

You delete the .git/index.lock file, but Git still says it exists. This can happen d...

Fix Nginx 502 Bad Gateway with Docker Multiple Containers

If you run Nginx as a reverse proxy in front of multiple Docker containers, a 502 Bad Gateway err...

Fix DNS Probe Finished NXDOMAIN for a Specific Website

If you see the error "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome when trying to visit a speci...

Checklist for Troubleshooting Nginx Permission Denied Errors

Understanding the Problem

When Nginx returns a 403 Forbidden or logs an error like ...