Fatal error: Uncaught Error: Call to undefined function is_product() in /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-content/plugins/mage-eventpress/inc/mep_functions.php:2803
Stack trace:
#0 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-includes/class-wp-hook.php(307): mep_hide_hidden_product_from_single(Object(WP))
#1 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#2 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-includes/plugin.php(522): WP_Hook->do_action(Array)
#3 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-includes/class-wp.php(771): do_action_ref_array('wp', Array)
#4 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-includes/functions.php(1310): WP->main('')
#5 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-blog-header.php(16): wp()
#6 /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/index.php(17): require('/nfs/c03/h07/mn...')
#7 {main}
thrown in /nfs/c03/h07/mnt/50118/domains/turkeygrandprix.com/html/wp-content/plugins/mage-eventpress/inc/mep_functions.php on line 2803