Checklists for software errors, setup, and tool workflows.

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...

Fix Chrome Black Screen Flickering from Hardware Acceleration

If Chrome shows a black screen or flickers when watching videos, scrolling, or opening menus, har...

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

Symptom

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

Python Requests Timeout Not Waiting: Fixes and Checks

You set a timeout in Python's requests library, but the call either hangs foreve...

Fix ERR_NAME_NOT_RESOLVED in Chrome: Proxy Settings Guide

If you see ERR_NAME_NOT_RESOLVED in Chrome, it usually means the browser can'...

Fix Git 'index.lock file exists' Error

If you see fatal: Unable to create 'path/.git/index.lock': File exists. when...