Uncaught ReferenceError: wpf is not defined

Hi,
We have some issues with this plugin not working from time to time. This occurs even if we haven’t made anything changes on our website. However, if I just update the page template where the filter shows, it begin to work again, but just temporarily.

I’m wondering if it conflicts with other plugins, but there is no errors in the console except for this plugin.

All plugins, WP and our theme Divi are latest version.

Error is as below:

Uncaught ReferenceError: wpf is not defined
    at load_select2 (d37cc7828b7adf55990c8f5da1567b81.js:146:482)
    at wpfInit (d37cc7828b7adf55990c8f5da1567b81.js:151:404)
    at window.addEventListener.once (d37cc7828b7adf55990c8f5da1567b81.js:156:1)

Please let me know if you need more details.