Fatal error: Uncaught Error: Call to undefined function is_product() in /www/wp-content/themes/serieuzezaken-child/functions.php:57
Stack trace:
#0 /www/wp-includes/class-wp-hook.php(303): ts_redirect_product_pages(Object(WP))
#1 /www/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters('', Array)
#2 /www/wp-includes/plugin.php(518): WP_Hook->do_action(Array)
#3 /www/wp-includes/class-wp.php(763): do_action_ref_array('wp', Array)
#4 /www/wp-includes/functions.php(1291): WP->main('')
#5 /www/wp-blog-header.php(16): wp()
#6 /www/index.php(17): require('/www/wp-blog-he...')
#7 {main}
thrown in /www/wp-content/themes/serieuzezaken-child/functions.php on line 57