audio background not looping

audio_file.dart

import 'package:ambee2/models/animations/light_animation.dart';
import 'package:audio_service/audio_service.dart';
import 'package:flutter/material.dart';
// import 'package:just_audio/just_audio.dart';
import 'package:audioplayers/audioplayers.dart';

// Two lines below: this is how I call the audio to start
// await lightAnimation.audioHandler.setRepeatMode(AudioServiceRepeatMode.all);
// await lightAnimation.audioHandler.playUrl(lightAnimation.audioUrl, volumeSetValue);

class LightAnimation {
  String audioUrl;
  bool isAudioDownloaded;
  AudioPlayerHandler audioHandler = AudioPlayerHandler();
  
  LightAnimation({
    this.isAudioDownloaded = false,
    this.soundId,
    this.audioUrl,
  });
}


class AudioPlayerHandler extends BaseAudioHandler {
  final _player = AudioPlayer();

  AudioPlayerHandler() {
    //set the audio to repeat itself once it's done
    _player.setReleaseMode(ReleaseMode.LOOP);
  }

  Future<void> setUrl(String url) async => await _player.setUrl(url);

  Future<void> playUrl(String url, double volumeValue) => _player.play(url, volume: volumeValue);

  Future<void> resume() => _player.resume();

  @override
  Future<void> pause() => _player.pause();

  @override
  Future<void> stop() => _player.stop();

  Future<void> setVolume(double newValue) => _player.setVolume(newValue);
}