Fatal error: Uncaught TypeError: Unsupported operand types: string - int in /www/tienda-virtual.com.ar/tienda-virtual.com.ar/public/Controllers/Principal.php:62 Stack trace: #0 /www/tienda-virtual.com.ar/tienda-virtual.com.ar/public/index.php(29): Principal->procategoria('1,assets,img,cs...') #1 {main} thrown in /www/tienda-virtual.com.ar/tienda-virtual.com.ar/public/Controllers/Principal.php on line 62