PHP Error

Hi,

I am trying out the free plugin to see how well it works with our current template AVADA but I get a small error. The following is the error that occurs and it can be seen HERE
Warning: urldecode() expects parameter 1 to be string, array given in /home/content/52/9779052/html/wp-includes/query.php on line 2599

https://wordpress.org/plugins/cm-business-directory/