Fatal error: Uncaught Error: Call to undefined function is_shop() in /www/wp-content/plugins/woocommerce-grid-list-toggle/woocommerce-grid-list-toggle.php:97 Stack trace: #0 /wordpress/wp-includes/class-wp-hook.php(324): WC_List_Grid->setup_gridlist(Object(WP)) #1 /wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #2 /wordpress/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #3 /wordpress/wp-includes/class-wp.php(830): do_action_ref_array('wp', Array) #4 /wordpress/wp-includes/functions.php(1336): WP->main('') #5 /wordpress/wp-blog-header.php(16): wp() #6 /www/index.php(17): require('/wordpress/wp-b...') #7 {main} thrown in /www/wp-content/plugins/woocommerce-grid-list-toggle/woocommerce-grid-list-toggle.php on line 97 internal_server_error <![CDATA[WordPress &rsaquo; Error]]> 500