Unity3D connection to MySQL error

I'm trying to get Unity client to establish connection to MySQL server purely for reads. I get an error when the connection is being made.

My Code:

  using UnityEngine;
  using System;
  using System.Data;
  using System.Text;
  using System.Collections;
  using System.Collections.Generic;
  using System.Security.Cryptography;
  using MySql.Data;
  using MySql.Data.MySqlClient;
  
  public class DatabaseHandler : MonoBehaviour {
  
      public string host, database, user, password;
      public bool pooling = true;
  
      private string connectionString;
      private MySqlConnection con = null;
      private MySqlCommand cmd = null;
      private MySqlDataReader rdr = null;
  
      private MD5 _md5Hash;
  
      void Awake() {
  
          DontDestroyOnLoad(this.gameObject);
          connectionString = "Server="+host+";Database="+database+";User ID="+user+";Password="+password+";Pooling=";
          if (pooling){
              connectionString += "true;";
          } else {
              connectionString += "false;";
          }
  
          try {
              con = new MySqlConnection(connectionString);
              con.Open(); //  THIS is line 47 in the error
              Debug.Log ("Mysql State: " + con.State);
          } catch (Exception e) {
              Debug.Log (e); //  THIS is line 51 in the error
          }
  
      }
  }

Error:

System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.Collections.Generic.Dictionary`2[System.String,MySql.Data.MySqlClient.CharacterSet].get_Item (System.String key) [0x000a2] in /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Collections.Generic/Dictionary.cs:150 at MySql.Data.MySqlClient.CharSetMap.GetCharacterSet (DBVersion version, System.String CharSetName) [0x00000] in :0 at MySql.Data.MySqlClient.CharSetMap.GetEncoding (DBVersion version, System.String CharSetName) [0x00000] in :0 at MySql.Data.MySqlClient.Driver.Configure (MySql.Data.MySqlClient.MySqlConnection connection) [0x00000] in :0 at MySql.Data.MySqlClient.MySqlConnection.Open () [0x00000] in :0 at (wrapper remoting-invoke-with-check) MySql.Data.MySqlClient.MySqlConnection:Open () at DatabaseHandler.Awake () [0x0007a] in /Users/ThaMacPro/Desktop/Unity Projects/youtubeMySQL/Assets/Scripts/DatabaseHandler.cs:47 UnityEngine.Debug:Log(Object) DatabaseHandler:Awake() (at Assets/Scripts/DatabaseHandler.cs:51)

Can anyone tell me how this error can be fixed? Thank you!