Checklists for software errors, setup, and tool workflows.

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Fix ERR_CERT_AUTHORITY_INVALID on Localhost

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

Fix Nginx Permission Denied on Configuration File

When Nginx reports permission denied while reading a configuration file, the service...

Fix VS Code Source Control Not Detecting File Modifications

You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...

Fix ERR_NAME_NOT_RESOLVED on All Sites in Chrome

If Chrome shows ERR_NAME_NOT_RESOLVED on every site you visit, it means your bro...

Fix Docker Compose 'Port Already Allocated' for MySQL

You run docker compose up and get an error like Error: Port 3306 is already al...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer on GitHub
If you see fatal: unable to access 'https://github.com/...': SSL certificate proble...