Thank for your response. I updated PHP to version :
PHP 5.6.27 (cli) (built: Oct 14 2016 14:06:54)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
still got this error:
Fatal error: Call to a member function get() on null in /srv/sites/marketplace/wp-content/plugins/digital-publications-by-supsystic/modules/templates/mod.php on line 12
I used WordPress version 4.6.1
