Social Login buttons not clickable after item added to cart

Hi,

Before an item is added to the shopping cart, the Social Login buttons at login/registration work fine.

However, after an item is added to the shopping cart and the user proceeds to the checkout, the Social Login buttons at Checkout do nothing when they are clicked. The error given in the console is, “Uncaught ReferenceError: theChampInitiateLogin is not defined at HTMLElement.onclick ((index):605)”

Firstly, I am aware that there are a few previous threads with this error that are related to caching plugins. I have disabled all caching related plugins and the issue remains.

Does anyone have any idea what could be causing this? It is not a problem until an item is added to the shopping cart and the user proceeds to the checkout. Before that the Social Login buttons work fine.