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

Fix Nginx Upstream Connection Refused Error

If you see upstream connection refused in your Nginx error logs, it means Nginx trie...

How to Remove the Externally Managed Environment Flag in pip

If you're seeing error: externally-managed-environment when using pip on a moder...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer Certificate

When you run git clone, git pull, or git fetch over HTTPS,...

Fix Node Sass Build Failure After npm Cache Clean

Remove Large Files from Git History

If your Git repository is bloated because a large file was committed and later removed, the file ...

Fix ERR_CERT_AUTHORITY_INVALID on Localhost

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