The snapshot is not represented correctly - ios

Question

This is the code responsible for uploading text of a post for a blogging app the text of the post is retrieved correctly and saved in snapshot
struct postt {
let username : String!
let textofpost : String!
}
class TableViewController: UITableViewController {
var databaseref = FIRDatabase.database().reference()
var loggedinuser : AnyObject?
var posts = [postt]()
override func viewDidLoad() {
super.viewDidLoad()
self.loggedinuser = FIRAuth.auth()?.currentUser
self.databaseref.child("users").child(self.loggedinuser!.uid).observeSingle
Event(of: .value) {(snapshot:FIRDataSnapshot) in
let snapshot = snapshot.value as! [String:AnyObject]
let username = snapshot["name"] as? String
self.databaseref.child("posts").queryOrderedByKey().observe(.childAdded, with: {( snapshot: FIRDataSnapshot) in
let snapshot = snapshot.value as? NSDictionary
The next variable textofpost doesn't contain anything and i don't know what is the problem so when i represent the cell only the label appears which has a snapshot from the path name in the node users
let textofpost = snapshot?["text"] as? String
self.posts.insert(postt(username : username, textofpost : textofpost), at: 0)
// self.feeds.reloadData()
self.tableView.reloadData()
}
)}
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.posts.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
let label = cell.viewWithTag(1) as! UILabel
label.text = posts[indexPath.row].username
let textview = cell.viewWithTag(2) as! UITextView
textview.text = posts[indexPath.row].textofpost
return cell
}
}