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

Fixing Cloudflare Wildcard Subdomain Permissions Denied Errors

You set up a wildcard DNS record in Cloudflare, but requests to subdomains return a permissions d...

Fix ERR_NAME_NOT_RESOLVED on All Sites in Chrome

If Chrome shows ERR_NAME_NOT_RESOLVED on every site you visit, it means your bro...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix 'Permission Denied' When Activating Python venv

When you try to activate a Python virtual environment with source venv/bin/activate ...

Cloudflare SSL Full Strict Origin Server Troubleshooting

When you set Cloudflare SSL/TLS encryption mode to Full (strict), your browser-to-Cloudflare conn...

Fix Externally Managed Error: Create Virtual Environment

If you're on a modern Linux distribution and try to install a Python package with pip, you ma...