When I try to go to the "catalog" page on my site I get the below error. the line of the error varies each time I reload. this is the page that ecoomerce uses to display my products. Right now I have about 4000 products, but eh catalog page is only set to display 10 at a time.

Fatal error: Maximum execution time of 30 seconds exceeded in /home/apop/apoprecords.com/updates/concrete5.4.2/concrete/libraries/3rdparty/Zend/Cache/Backend/File.php on line 962