Warning: count () on line 59 of slickquiz-front.php

[Melis45]

Hi there,

I'm getting a warning on the footer of my website:

Warning: count(): Parameter must be an array or an object that implements Countable in /home/m
elisssm/public_html/wp-content/plugins/slickquiz/php/slickquiz-front.php on line 59

This is the code from line 59:
if ( count( $pageQuizzes ) ) {

Any suggestions for a resolution? Thanks!