Unity: Google Play Games crashes on login - unity3d

Question

I'm trying to save a variable using google play games cloud save. However it crashes when it signs in. I've definitely enabled it on the developer console. I never had this problem before I added the cloud save feature and it was just doing achievements and scoreboards. Also, when I'm not connected to the internet, it doesn't crash and locally saving the data works fine. Can any one help?
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GooglePlayGames;
using GooglePlayGames.BasicApi;
using GooglePlayGames.BasicApi.SavedGame;
using System.Text;
public class playgamesscript : MonoBehaviour {
public static playgamesscript Instance { get; private set; }
const string SAVE_NAME = "Test";
bool isSaving;
textEdit textEditScript;
control controlScript;
bool isCloudDataLoaded;
// Use this for initialization
void Start () {
Instance = this;
textEditScript = GameObject.FindGameObjectWithTag("UIControl").GetComponent<textEdit>();
controlScript = GameObject.FindGameObjectWithTag("Control").GetComponent<control>();
if (!PlayerPrefs.HasKey(SAVE_NAME))
PlayerPrefs.SetString(SAVE_NAME, "0");
if (!PlayerPrefs.HasKey("IsFirstTime"))
PlayerPrefs.SetInt("IsFirstTime", 1);
LoadLocal();
PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder().EnableSavedGames().Build();
PlayGamesPlatform.InitializeInstance(config);
PlayGamesPlatform.Activate();
if (control.signInAttempt == false)
{
SignIn();
}
}
void SignIn()
{
control.signInAttempt = true;
Social.localUser.Authenticate(success => { LoadData(); });
}
#region Saved Games
string GameDataToString()
{
return control.Highscore.ToString();
}
void StringToGameData(string cloudData, string localData)
{
if (PlayerPrefs.GetInt("IsFirstTime") == 1){
PlayerPrefs.SetInt("IsFirstTime", 0);
if (int.Parse(cloudData) > int.Parse(localData)){
PlayerPrefs.SetString(SAVE_NAME, cloudData);
}
}
else if (int.Parse(localData) > int.Parse(cloudData))
{
control.Highscore = int.Parse(localData);
AddScoreToLoeaderBoard(textEdit.leaderboardStat, control.Highscore);
isCloudDataLoaded = true;
SaveData();
return;
}
control.Highscore = int.Parse(cloudData);
isCloudDataLoaded = true;
}
void StringToGameData (string localData)
{
control.Highscore = int.Parse(localData);
}
void LoadData()
{
if (Social.localUser.authenticated)
{
isSaving = false;
((PlayGamesPlatform)Social.Active).SavedGame.OpenWithManualConflictResolution(SAVE_NAME, DataSource.ReadCacheOrNetwork, true, ResolveConflict, OnSavedGameOpened);
}
else {
LoadLocal();
}
}
private void LoadLocal()
{
StringToGameData(PlayerPrefs.GetString(SAVE_NAME));
}
public void SaveData()
{
if (!isCloudDataLoaded)
{
SaveLocal();
return;
}
if (Social.localUser.authenticated)
{
isSaving = true;
((PlayGamesPlatform)Social.Active).SavedGame.OpenWithManualConflictResolution(SAVE_NAME, DataSource.ReadCacheOrNetwork, true, ResolveConflict, OnSavedGameOpened);
}
else
{
SaveLocal();
}
}
private void SaveLocal()
{
PlayerPrefs.SetString(SAVE_NAME, GameDataToString());
}
private void ResolveConflict(IConflictResolver resolver, ISavedGameMetadata original, byte[] originalData, ISavedGameMetadata unmerged, byte[] unmergedData)
{
if (originalData == null)
{
resolver.ChooseMetadata(unmerged);
} else if (unmergedData == null)
{
resolver.ChooseMetadata(original);
} else
{
string originalStr = Encoding.ASCII.GetString(originalData);
string unmergedStr = Encoding.ASCII.GetString(unmergedData);
int originalNum = int.Parse(originalStr);
int unmergedNum = int.Parse(unmergedStr);
if (originalNum > unmergedNum)
{
resolver.ChooseMetadata(original);
return;
} else if (unmergedNum> originalNum)
{
resolver.ChooseMetadata(unmerged);
}
resolver.ChooseMetadata(original);
}
}
private void OnSavedGameOpened(SavedGameRequestStatus status, ISavedGameMetadata game)
{
if (status == SavedGameRequestStatus.Success)
{
if (!isSaving)
{
LoadGame(game);
} else
{
SaveGame(game);
}
}
else
{
if (!isSaving)
{
LoadLocal();
}else
{
SaveLocal();
}
}
}
private void LoadGame(ISavedGameMetadata game)
{
((PlayGamesPlatform)Social.Active).SavedGame.ReadBinaryData(game, OnSavedGameDataRead);
}
private void SaveGame(ISavedGameMetadata game)
{
string stringToSave = GameDataToString();
PlayerPrefs.SetString(SAVE_NAME, stringToSave);
byte[] dataToSave = Encoding.ASCII.GetBytes(stringToSave);
SavedGameMetadataUpdate update = new SavedGameMetadataUpdate.Builder().Build();
((PlayGamesPlatform)Social.Active).SavedGame.CommitUpdate(game, update, dataToSave, OnSavedGameDataWritten);
}
private void OnSavedGameDataRead(SavedGameRequestStatus status, byte[] savedData)
{
if (status == SavedGameRequestStatus.Success)
{
string cloudDataString;
if (savedData.Length == 0)
{
cloudDataString = "0";
} else
cloudDataString = Encoding.ASCII.GetString(savedData);
string localDataString = PlayerPrefs.GetString(SAVE_NAME);
StringToGameData(cloudDataString, localDataString);
}
}
private void OnSavedGameDataWritten(SavedGameRequestStatus status, ISavedGameMetadata game)
{
}
#endregion /Saved Games
///
JNI DETECTED ERROR IN APPLICATION: can't call void com.google.android.gms.common.api.PendingResult.setResultCallback(com.google.android.gms.common.api.ResultCallback) on null object'