Thread 1 EXC error - swift

Question

I've been creating a firebase database but I have one error that I just can't get past. It says:
thread 1 exc_bad_instruction (code=exc_i386_invop subcode=0x0)'
It's probably something simple that I'm just looking past. Any Ideas?
Here's the code & the error is on the line of code:
//
// Database.swift
// intern
//
// Created by Lani Daniels on 8/20/17.
// Copyright © 2017 Lani Daniels. All rights reserved.
//
import UIKit
import Firebase
import FirebaseDatabase
struct PostStruct {
let title: String
let message: String
}
class DatabaseViewController: UITableViewController {
var posts: [PostStruct] = []
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
let label1 = cell.viewWithTag(1)as! UILabel
label1.text=posts[indexPath.row].title
// ERROR BELOW:thread 1 exc_bad_instruction (code=exc_i386_invop subcode=0x0)
let label2 = cell.viewWithTag(2)as! UILabel
label2.text=posts[indexPath.row].message
return cell
}
}

Answer 1

For the first error:
let cell = tableview.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
Change tableview to tableView
For the second one:
It seems like you're trying to access to the outlet that might be not a UILabel. check this by making optional biding like:
let label2 = cell.viewWithTag(2) as? UILabel
and check that label using breakpoint. It might be nil.
Also it is better to use a custom cell class with two labels as outlets and then dequeue that custom cell in the cellForRowAt method:
class CustomCell: UITableViewCell {
#IBOutlet weak var firstLabel: UILabel!
#IBOutlet weak var secondLabel: UILabel!
}
And then
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableview.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as? CustomCell
cell?.firstLabel.text=posts[indexPath.row].title
cell?.secondLabel.text=posts[indexPath.row].message
return cell!
}
And don't forget to set that custom class for the cell in the interface builder