Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run a Gradle build and it fails with No cached version of ... available for offline mod...

Fix PHP Composer Install Memory Limit Fatal Error
When running composer install or composer update, you may see a fatal e...

Fix Kubernetes kubectl Connection Refused and Permissions Errors
If you run kubectl and see connection refused or permissions deni...

Fix Task Scheduler Access Denied (Event ID 103)
You scheduled a task in Windows Task Scheduler, but it fails with Event ID 103 and an 'Access Den...

Fixing Nginx Permission Denied for Upstream Unix Socket
If you see connect() to unix:/var/run/php-fpm.sock failed (13: Permission denied) in...

Fix 'Command Not Found' in Ubuntu WSL Terminal
When you open Windows Terminal and run a command in Ubuntu WSL but get 'command not found', it's ...