Updating cart quantity

-- url of the page with the problem -- : mediausa.net/nanajoskitchen/customer-orders/checkout.html
-- HikaShop version -- : 3.4.0
-- Joomla version -- : 3.8.7
-- PHP version -- : 7.2.4
-- Browser(s) name and version -- : Chrome
-- Error-message(debug-mod must be tuned on) -- : Unable to Connect to LDAP Server

When I try to update the quantity of an item in the cart from 1 to any other quantity I get the error message above at the top of the page. It does not seem to effect the functionality because the cart does update but I was just wondering what would be causing that error message to appear.

I am attaching a screen shot.

I just noticed that the error does not appear once I login. I suppose that makes sense because you need to register or login before you can order.

Let me know if this is the way it is supposed to work.

Thanks for a great product!