unable to update back4app database in android studio - parse-platform

Question

So I've linked my android app to back4app parse server. According to their documentation when I run the following code a class is supposed to be created in the database. However Android studio shows the following errors:
cannot resolve symbol SaveCallback
Method does not override method from its superclass
package com.example.android.beastt;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.parse.ParseObject;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Toast;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseUser;
import java.util.Arrays;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ParseObject soccerPlayers = new ParseObject("SoccerPlayers");
// Store an object
soccerPlayers.put("playerName", "A. Wed");
soccerPlayers.put("yearOfBirth", 1997);
soccerPlayers.put("emailContact", "a.wed#email.io");
soccerPlayers.addAllUnique("attributes", Arrays.asList("fast", "good conditioning"));
// Saving object
soccerPlayers.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (e == null) {
// Success
} else {
// Error
}
}
});
}
}