Hi, i have an error with the Ccomment. All the site pages where is the comment plugin are now blank. The others pages are visible.

Here there is the Content Comment plugin, and the page is blank
http://brunosaetta.it/attualita/wikipedia-si-censura-per-protesta-contro-lammazzablog.html

Here there isn't the plugin, and the page is visible:
http://brunosaetta.it/privacy/garanti-europei-bocceranno-privacy-shield.html

If I disable Content - Comment plugin all the page are visibile.
Please help me.

Comment 5.3.5 pro
Joomla 3.5.1
PHP 5.6.14
Linux Apache