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

Docker Compose Environment Variable Not Set in Container: Fixes

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

Docker Network Not Found After Container Restart: Fixes

You restart a Docker container and get an error like network <name> not found....

How to Fix Cloudflare 521 Error Due to Proxy Issues

If you see a Cloudflare 521 error, the message usually says something like “Web server is down.” ...

Fix 'Python Command Not Found' in Anaconda on Windows

Fix Firefox Secure Connection Failed Error Due to Antivirus

You try to visit a website in Firefox and see a message like “Secure Connection Failed” or “PR_CO...

Fix VS Code Terminal Not Opening with Conda Environment

You open VS Code, try to launch the integrated terminal, and nothing happens—or the terminal open...