A component that writes messages to the server logs.
When a page runs, it prints your message to the terminal/console (standard error).
Use it to track what happens and troubleshoot issues.
Where do the messages appear?
Running from a terminal (Linux, macOS, or Windows PowerShell/Command Prompt): they show up in the window.
Docker: run docker logs <container_name>.
Linux service (systemd): run journalctl -u sqlpage.