'Error while adding new data in realm in swift

I am trying to create table and add 1st row in realm table. But getting below error

 realm?.write {
            let Model = Feedback()
            Model._id = UUID().uuidString
            Model.data1 = data1
            Model.data2 = data2
            Model.message = message
            realm?.add(Model, update: .all)
        }

Feedback model ->

class Feedback: Object {
    @objc dynamic var _id: String = ""
    @objc dynamic var data1: String = ""
    @objc dynamic var data2: Int = 0
    @objc dynamic var message: String = ""

    override static func primaryKey() -> String? {
        return "_id"
    }
    
}

Error I am getting this

*** Terminating app due to uncaught exception 'RLMException', reason: 'Object type 'Feedback' is not managed by the Realm. If using a custom `objectClasses` / `objectTypes` array in your configuration, add `Feedback` to the list of `objectClasses` / `objectTypes`.'


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