Your Bubble app's database is very flexible and powerful. It can store a lot - but if you try to store too much data in one field, it can lead to performance issues relating to that field. What you're encountering is a technical limitation that we've placed on file storage in the database. While we don't impose any strict limits on the length of data that you can save to a database field, something values that are extremely long (for instance: text-encoded images, base64 images, file URLs, or lists of things) can result in your copy and restore database process getting stuck.

Please reach out to our Support team for assistance in resolving this.