Thank you for writing in, please clear all caches (plugin, server-side, CDN, and browser's cache) to make sure that the site is not serving outdated resources. This will help you to avoid any potential errors.
If that does not work, while your caching plugin is clear and deactivate. Please do a testing for a plugin conflict. You can do this by deactivating all third-party plugins, and see if the problem remains. If it's fixed, you'll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
Let us know how it goes,