Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

Cloudflare 522 Error: Analyzing Server Logs for a Fix

Cloudflare 522 Error: Analyzing Server Logs for a Fix

You're seeing a 522 error from Cloudflare. That means Cloudflare connected to your origin ser...

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

You open Chrome and see NET::ERR_CERT_AUTHORITY_INVALID on every site, even trus...

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

Win 11 WiFi Connected But No Internet: IPConfig Release/Renew Fix

Win 11 WiFi Connected But No Internet: IPConfig Release/Renew Fix

You're connected to WiFi, the icon shows full bars, but websites won't load. This usually...

Fixing Unresolved Paths After Git Merge Conflict Rebase

Fixing Unresolved Paths After Git Merge Conflict Rebase

When you run git rebase and hit a merge conflict, Git pauses the rebase and asks you...

Resolving Python Dependency Conflicts in pyproject.toml

Resolving Python Dependency Conflicts in pyproject.toml

You've updated a dependency in pyproject.toml, and now pip install ...