Problem with metrics on MODX site?

Question

MODX

Good afternoon, tell me please, maybe someone has already come across.
I'm trying to add a metric script to the site. In this case, after adding it, the following happens. An empty page comes from the server with an empty head and body tag, so it doesn't give any errors. Help me figure out what's wrong.

Answer 1

The site on the phenomenon most likely output like
this
{ignore}
script
{/ignore}
Or add a space after the curly brace of the script
{space script}

Answer 2

Try adding the metric script in the footer, before the end tag

Answer 3

This can happen if there is a 500 error and the display of errors is disabled in the settings