title: No named parameter with the name 'nullOk' error in flutter
body: <p>After having horrible problems I finished by passing my project into another one. But now It gives me this error after trying to run my program. Which I never see before. And also, I didn't edit these codes because they are libraries.</p>
  <pre><code>../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_neumorphic-3.0.3/lib/src/widget/app_bar.dart:147:57: Error: No named parameter with the name 'nullOk'.
      final ScaffoldState scaffold = Scaffold.of(context, nullOk: true);
                                                          ^^^^^^
  ../../Developer/flutter/packages/flutter/lib/src/material/scaffold.dart:1918:24: Context: Found this candidate, but the arguments don't match.
    static ScaffoldState of(BuildContext context) {
                         ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/components/app_bar.dart:32:57: Error: No named parameter with the name 'nullOk'.
      final ScaffoldState scaffold = Scaffold.of(context, nullOk: true);
                                                          ^^^^^^
  ../../Developer/flutter/packages/flutter/lib/src/material/scaffold.dart:1918:24: Context: Found this candidate, but the arguments don't match.
    static ScaffoldState of(BuildContext context) {
                         ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/components/text_field.dart:953:32: Error: No named parameter with the name 'nullOk'.
          MediaQuery.of(context, nullOk: true)?.navigationMode ??
                                 ^^^^^^
  ../../Developer/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) {
                          ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/neumorphic/theme.dart:390:52: Error: No named parameter with the name 'nullOk'.
        _cupertinoOverrideTheme.resolveFrom(context, nullOk: nullOk),
                                                     ^^^^^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_neumorphic-3.0.3/lib/src/widget/app_bar.dart:147:57: Error: No named parameter with the name 'nullOk'.
      final ScaffoldState scaffold = Scaffold.of(context, nullOk: true);
                                                          ^^^^^^
  ../../Developer/flutter/packages/flutter/lib/src/material/scaffold.dart:1918:24: Context: Found this candidate, but the arguments don't match.
    static ScaffoldState of(BuildContext context) {
                         ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/components/app_bar.dart:32:57: Error: No named parameter with the name 'nullOk'.
      final ScaffoldState scaffold = Scaffold.of(context, nullOk: true);
                                                          ^^^^^^
  ../../Developer/flutter/packages/flutter/lib/src/material/scaffold.dart:1918:24: Context: Found this candidate, but the arguments don't match.
    static ScaffoldState of(BuildContext context) {
                         ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/components/text_field.dart:953:32: Error: No named parameter with the name 'nullOk'.
          MediaQuery.of(context, nullOk: true)?.navigationMode ??
                                 ^^^^^^
  ../../Developer/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) {
                          ^^
  ../../Developer/flutter/.pub-cache/hosted/pub.dartlang.org/neumorphic-0.4.0/lib/src/neumorphic/theme.dart:390:52: Error: No named parameter with the name 'nullOk'.
        _cupertinoOverrideTheme.resolveFrom(context, nullOk: nullOk),
  
  
      Command PhaseScriptExecution failed with a nonzero exit code
      note: Using new build system
      note: Building targets in parallel
      note: Planning build
      note: Constructing build description
  
  Could not build the precompiled application for the device.
                                                     ^^^^^^
  </code></pre>
  <p>Here's my pubspec.yaml</p>
  <pre><code>name: Test
  
  
  environment:
    sdk: &quot;&gt;=2.1.0 &lt;3.0.0&quot;
  
  dependencies:
    rflutter_alert: ^1.0.3
    flutter:
      sdk: flutter
    mqtt_client: ^8.0.0
    provider: ^4.3.2+2
    get_it: ^5.0.1
    vibration: ^1.7.2
    clay_containers: ^0.2.2
    local_auth: ^0.6.2+1
    flutter_secure_storage: ^3.3.3
    neumorphic: ^0.4.0
    shared_preferences: ^0.5.8
    flutter_neumorphic: ^3.0.3
    cupertino_icons: ^0.1.3
  
  dev_dependencies:
    flutter_test:
      sdk: flutter
  
  
  # For information on the generic Dart part of this file, see the
  # following page: https://dart.dev/tools/pub/pubspec
  
  # The following section is specific to Flutter.
  flutter:
    uses-material-design: true
    assets:
      - images/homestadelogo.png
      - images/morning.png
    fonts:
      - family: OpenSans
        fonts:
          - asset: fonts/assets/fonts/OpenSans.ttf
      - family: myLamp
        fonts:
          - asset: fonts/assets/fonts/mylamp.ttf
  </code></pre>
  <p>What should I do?
  If you need more details, just ask me.</p>