Checklists for software errors, setup, and tool workflows.

Fix Nginx Redirect Loop After SSL Certificate Install

You installed an SSL certificate, and now your site redirects in a loop. The browser shows 'E...

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

Symptom

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

How to Manually Activate a Python Virtual Environment

You've created a Python virtual environment but can't get it to activate. This guide walk...

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...

How to Fix Docker Pull Unauthorized Access Denied

When you run docker pull and get an "unauthorized: access denied" error, Doc...

Fix Git Authentication Failed in VS Code on Linux

You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...