Fatal error: Uncaught Error: Cannot use object of type WP_Error as array in /var/www/clients/client21/web24/web/assets/themes/custom/single.php:21
Stack trace:
#0 /var/www/clients/client21/web24/web/wp-includes/template-loader.php(106): include()
#1 /var/www/clients/client21/web24/web/wp-blog-header.php(19): require_once('/var/www/client...')
#2 /var/www/clients/client21/web24/web/index.php(17): require('/var/www/client...')
#3 {main}
thrown in /var/www/clients/client21/web24/web/assets/themes/custom/single.php on line 21