Fatal error: Uncaught TypeError: usort(): Argument #2 ($callback) must be a valid callback, first array member is not a valid class name or object in /www/hosting/vasweb.link/karty/storage-vitriny_vasweb_link/modification/catalog/controller/product/product.php:874 Stack trace: #0 /www/hosting/vasweb.link/karty/storage-vitriny_vasweb_link/modification/catalog/controller/product/product.php(874): usort() #1 /www/hosting/vasweb.link/karty/storage-vitriny_vasweb_link/modification/system/engine/action.php(79): ControllerProductProduct->index() #2 /www/hosting/vasweb.link/karty/catalog/controller/startup/router.php(25): Action->execute() #3 /www/hosting/vasweb.link/karty/storage-vitriny_vasweb_link/modification/system/engine/action.php(79): ControllerStartupRouter->index() #4 /www/hosting/vasweb.link/karty/system/engine/router.php(67): Action->execute() #5 /www/hosting/vasweb.link/karty/system/engine/router.php(56): Router->execute() #6 /www/hosting/vasweb.link/karty/system/framework.php(165): Router->dispatch() #7 /www/hosting/vasweb.link/karty/vqmod/vqcache/vq2-system_startup.php(105): require_once('...') #8 /www/hosting/vasweb.link/karty/index.php(23): start() #9 {main} thrown in /www/hosting/vasweb.link/karty/storage-vitriny_vasweb_link/modification/catalog/controller/product/product.php on line 874