Hi,
The vew.min.js file is added automatically to the head of the page by the cart notification plugin through Joomla's API. If it doesn't appear on the page even though the cart notification plugin is activated, then it means that something is removing it from the head or ignoring it in the template. That normally should not happen and it's likely caused by the template javascript files caching system your template is using, which is why I asked you to deactivate it in my previous message in order to deactivate it and fix the problem.
Unfortunately, I cannot provide a link to a documentation on that as I don't know how your template works and can only guess.
That's also why I told you to check with your template provider.
I'm sorry but I can't do more here.