My issue was being caused by a call to a bad script (or the script is making a bad call itself). Anyways, I found an interim solution for as long as ebay still hosts the bad script. If you are using Firefox with AdBlockPlus enabled (as I am - Windows 7 Ultimate, Firefox 54.0.1/32bit) you can create a custom filter. Under Filter preferences, select Custom Filter, Add Filter group, name it, select it, Add filter, then paste "templates-js-18f92b.js" in the rule and enable. So far, my Purchase history page (which is where I was getting the error) reloads just fine and I do not notice any loss of functionality. I will update if I finally find some function that appears to be missing... This filtering function should be available on other browsers, but I have limited experience with other than the Fox.
