ACS commons Error handler

I am using AEM 6.0. Using ACS commons for error handler implementation.

404 error is working find but 500 error is not working. I am trying to break test by breaking a component with error. But it is not working,

Configuration I am using :

<?xml version="1.0" encoding="UTF-8"?> <jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0" jcr:primaryType="sling:OsgiConfig" enabled="{Boolean}true" serve-authenticated-from-cache="{Boolean}true" ttl="{Long}300" error-page.extenstion="html" error-page.fallback-name="500" />