Yes, that was what we were both asking about.

The linkpoint API payment method has been retired/replaced by the payeezy method. In your "upgrade", its files were not removed from your site, and (because its code is old and no longer supported) leaving it there causes an issue with php 7.x.

It would be recommended to at least remove that file from loading from the includes/modules/payment directory and for "cleanliness" to remove it, it's sub-folder and the associated language file... then you should be able to again operate under php 7.x as supported by the remainder of software on your website.