Sound is not working in cordova-plugin-local-notification

Hi.

I am using
ionic - v
3.20.0
cordova - v
8.0.0

I added the plugin like.
ionic cordova plugin add cordova-plugin-local-notofication
AND
npm install --save @ionic-native/local-notification

And I am using the code

this.localNotifications.schedule({
text: ‘Please login and take a test’,
trigger:{every: “minute”},
led: ‘FF0000’,
sound: ‘file://resources/sounds/beep.mp3’,
vibrate: true,
wakeup : true,
lockscreen : true
});

Everything is working Properly But the sound is not working.
Vibration also working.

What should I do now? Can I play the default sound !!!

Please help me !!!

Thanks.