Zend certified PHP/Magento developer

Error when adding new products to Magento 2

We are having an issue when we add new products. You cant search the product in the store and when you go directly to the url https://www.vikingtelecomsolutions.com/viking-e-30tf-ip-stainless-steel-touch-free-voip-entry-phone.html we get an error on the product page. We cant find the product in our catalog, we cant search for the product in the store either.

Any help would be greatly appreciated.