Can Plone error pages be cached?
The default option is for Plone error pages never to be cached. But you can change this setting to allow EP to cache error pages. To do this, open the EP configuration tool, choose the relevant proxy definition, go to the Advanced Caching tab and check the box for the option “Allow error pages to be cached.” Even after doing this, these pages will not automatically be cached unless the cache headers in the Plone error pages allow this.
