Checklists for software errors, setup, and tool workflows.

Fix ERR_CERT_AUTHORITY_INVALID on Localhost

When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

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 'Python Command Not Found' in Anaconda on Windows

If you installed Anaconda on Windows but typing python in Command Prompt returns

Fix Python Permission Denied When Installing Packages

You try to install a Python package with pip and get a PermissionError: [Errno 13] Permissi...