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Hi Debby, you're lucky it's only been 3 days. This is a facebook problem.
When we play on facebook there is also a lot of things happening in the background, like messages, notifications and adverts.
Sometimes the facebook data interrupts the game and we get the error message.
Some solutions other players have found are to only have the game open and nothing else, to not answer messages or click on notifications, to turn off notifications, or to play in the Facebook game room.
King are aware of the problem and I hope they will sort it out soon.
Here is a previous post about it for more information: An Error has Occured