Error occurring while using syncfution_flutter_pdfviewer-20.1.60-beta version enter image description here

CodePudding user response：

As error said you should change

WidgetsBinding?.instance.addPostFrameCallback

To

WidgetsBinding.instance?.addPostFrameCallback

CodePudding user response：

Kindly upgrade to the latest version of Flutter SDK to get the issue resolved. Flutter SDK setup link for the latest version: https://docs.flutter.dev/get-started/install/windows#get-the-flutter-sdk