Fatal Exception

[AcidRain9]

This is my simple code

import androidx.appcompat.app.AppCompatActivity;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;

import com.google.gson.JsonObject;
import com.koushikdutta.async.future.FutureCallback;
import com.koushikdutta.ion.Ion;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Network network = new Network();
    network.execute();
}







public class Network extends AsyncTask<String,Void,String>{

    @Override
    protected String doInBackground(String... strings) {
        try {

            Ion.with(getApplicationContext()).load("http://example.com/thing.json").asJsonObject().setCallback(new FutureCallback<JsonObject>() {
                @Override
                public void onCompleted(Exception e, JsonObject result) {
                    Log.i("json", result.toString());
                }
            });


        } catch (Exception e) {
            e.printStackTrace();

        }
        return null;
    }
}

This is the error I'm getting

2020-07-29 06:42:15.878 7801-7827/com.example.weatherapp E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: com.example.weatherapp, PID: 7801
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$4.done(AsyncTask.java:415)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: java.lang.NoSuchMethodError: No static method metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; in class Ljava/lang/invoke/LambdaMetafactory; or its super classes (declaration of 'java.lang.invoke.LambdaMetafactory' appears in /apex/com.android.art/javalib/core-oj.jar)
at com.koushikdutta.async.future.SimpleFuture.setCallback(SimpleFuture.java:216)
at com.koushikdutta.ion.IonRequestBuilder.resolveAndLoadRequest(IonRequestBuilder.java:390)
at com.koushikdutta.ion.IonRequestBuilder.getLoaderEmitter(IonRequestBuilder.java:354)
at com.koushikdutta.ion.IonRequestBuilder.getLoaderEmitter(IonRequestBuilder.java:317)
at com.koushikdutta.ion.IonRequestBuilder.execute(IonRequestBuilder.java:690)
at com.koushikdutta.ion.IonRequestBuilder.execute(IonRequestBuilder.java:643)
at com.koushikdutta.ion.IonRequestBuilder.asJsonObject(IonRequestBuilder.java:696)
at com.example.weatherapp.MainActivity$Network.doInBackground(MainActivity.java:46)
at com.example.weatherapp.MainActivity$Network.doInBackground(MainActivity.java:40)
at android.os.AsyncTask$3.call(AsyncTask.java:394)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
at java.lang.Thread.run(Thread.java:923) 

Can anyone please explain what am I doing wrong I tried to debug it many times but I was unsuccessful

Any help will be appreciated