sqLite table not found

I use this code but There error SqliteException: SQLite error
no such table: sqlite_stat1
where is problem?

using UnityEngine;
using System.Collections;
using System.Data;
using Mono.Data.Sqlite;

public class PlayerDataManger : MonoBehaviour {


	private string connectionString;

	// Use this for initialization
	void Start () {
		connectionString = "URI=file:" + Application.dataPath + "/existing.sqlite";
	
		GetConnectionScore ();
	}
	

	void GetConnectionScore ()
	{
		using (IDbConnection dbConnection = new SqliteConnection (connectionString)) {
			dbConnection.Open ();

			using (IDbCommand dbCmd = dbConnection.CreateCommand ()) {

				//string sqlQuery = "Select * From Person";
				string sqlQuery = "Select idx from sqlite_stat1";

				dbCmd.CommandText = sqlQuery;

				using (IDataReader reader = dbCmd.ExecuteReader ()) {
				
					while (reader.Read ()) {
					
					//	Debug.Log (reader.GetString (0));
						Debug.Log (5);
					
					}
				
				
					dbConnection.Close ();
					reader.Close ();
				
				}
			}
		
		}



	}
}

DB

The db you show in your screen shots is called “existing.db”. The db you access in your code is called “existing.sqlite”. I can only assume that the “existing.sqlite” db doesn’t contain a table named “sqlite_stat1”.

problem solved
the proble in extention database
name Database must be existing.db