Steps to reproduction:

1. Open magnolia public demo https://demoauthor.magnolia-cms.com/
2. Edit /travel-demo-marketing-tags/templates/pages/main-marketing-tags.ftl in Resources App
   1. Add ${asdasd} somewhere after navigation (not existing varible, without safeguard, somewhere in plain sight to throw error)
3. Open /travel in Pages App

Expected result: Yellow box with exception

Actual result: White page without any signs of error at all. Even part before error (head, first half of the body) is not rendered.

Reproducible on 6.2.29 and 6.2.34