I am also getting the same error.
I contacted my host company, and they said that they are running their servers on PHP 7.0.
My exact error is as below.
Parse error: syntax error, unexpected ‘[‘ in /hermes/bosnaweb18a/b2926/nf.rivieraapartmentsca/public_html/riviera/wordpress/wp-content/plugins/contempo-real-estate-custom-posts/includes/ct-real-estate-custom-shortcodes.php on line 1608
Any idea why?