Stuck After Selecting Package

[josepi]

My problem is that When someone clicks on the package to add to the cart

whmcs/cart.php?a=add&pid=1 , then I have to choose the domain name

I write any domain Inside the text box , then click on check availability

and then It get stucks loading , never end's

 

but If I go directly to the cart and chose everything from there works ok , just doesn't work adding a product to the cart

whmcs/cart.php?a=add&pid=1