[firebase bug] Can you help me solve this problem that I get when running my shopping app with firebase and whatsapp api

[Ricardo-Uribia]

Tengo un proyecto para trabajar con firebase pero al intentar correrla me sale el siguiente error en el debug

Launching lib\main.dart on sdk gphone x86 in debug mode...
lib\main.dart:1
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/fancy_dialog-1.0.4/lib/fancy_dialog.dart:139:34: Error: No named parameter with the name 'nullOk'.
assert(MediaQuery.of(context,nullOk: true) != null,'\n*context does not contain media query object\n');
^^^^^^
/C:/src/flutter/packages/flutter/lib/src/widgets/media_query.dart:818:25: Context: Found this candidate, but the arguments don't match.
static MediaQueryData of(BuildContext context) {
^^
2

FAILURE: Build failed with an exception.

• Where:
  Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1035