sticker pack invocke method is not working and crashing the app

[AbdulRehman4it]

Unhandled Exception: MissingPluginException(No implementation found for method isStickerPackInstalled on channel io.github.vincekruger/whatsapp_stickers)
E/flutter (25309): #0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:157:7)
E/flutter (25309):
E/flutter (25309): #1 WhatsAppStickers.isStickerPackInstalled (package:whatsapp_status_story_saver/model/flutter_whatsapp_stickers.dart:65:25)
E/flutter (25309):
E/flutter (25309): #2 _Page5State._checkInstallationStatuses (package:whatsapp_status_story_saver/pages/page5.dart:122:26)
E/flutter (25309):
E/flutter (25309):
W