We are using hybris 18.104.22.168 and we are facing issues when browsing the backoffice (specially with products). It happens from time to time, when hovering over a product image, or when trying to add new item to a collection. It forces us to refresh the browser and then it works until next time it happens. The error itself is this one, the logs don't say anything else.
Is this a known issue? How can we solve this?