Browser

A real browser: read a page after its JavaScript has run, or photograph it. Most of the web builds itself in the browser, so a plain fetch of it comes back with a nav bar and an empty box — this is what the page actually says once its scripts have run.

This instance has no browser and could not find one on this machine. Chromium cannot be built into the binary — it is a separate program — so an admin installs one, or sets CHROME_PATH to a particular one, or BROWSER_URL to a DevTools endpoint somewhere else.