Ninja Popups PHP Update Produces Error

I just updated from PHP 7.1 to 7.4 and am getting this Ninja Popups error:
Deprecated : Unparenthesized a ? b : c ? d : e is deprecated. Use either (a ? b : c) ? d : e or a ? b : (c ? d : e) in /home/laurasho/public_html/wp-content/plugins/arscode-ninja-popups/include/functions.inc.php on line 281

Am I in the right place to get assistance with this?

Thank you