No shortcodes working on Enfold site

Hello,
We are experiencing some problems with one of our client sites running Enfold:

About 4 days ago the shortcodes stopped working. Post sliders and some images are also not displaying. This goes for Avia shortcodes as well as Gravity forms shortcodes and others.

We have a custom mod of the portfolio.php file to allow shortcodes in portfolio excerpts, a mod we also made after the most recent theme update (April 4), but the problem seems to be on pages as well.

(note: it was $output .= !empty($excerpt) ? “<div class=’grid-entry-excerpt entry-content’ “.avia_markup_helper(array(‘context’=>’entry_content’,’echo’=>false)).”>”.do_shortcode($excerpt).”</div>” : ”;

in /wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/portfolio.php
Check this support thread for more info
https://kriesi.at/support/topic/shortcodes-in-excerpts/)

I tried deactivating and then reactivating all plugins to see if it solved the problems, to no avail.
Any help would be appreciated.