Checklists for software errors, setup, and tool workflows.

Fix Virtual Environment Not Activating in Terminal

Why Your Virtual Environment Won't Activate

You open a terminal, navigate to your pro...

Using nvm to Switch Node Version for a Specific Package

You might find that a package fails to install or run because it requires a specific Node.js vers...

Resolving Python Dependency Conflicts in setup.py

When you run pip install . or python setup.py develop, a dependency con...

Why VS Code Debugger Breakpoints Are Greyed Out and How to Fix

You set a breakpoint in VS Code, but it appears greyed out and the debugger skips it. This usuall...

Fix Cloudflare Origin Certificate with Let's Encrypt

If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...

Fix Git Push Rejected Non Fast Forward Branch Error

If you see ! [rejected] and non-fast-forward when running git pus...