I am facing while trying to build the app:
Error: Couldn't resolve the package 'intl' in 'package:intl/intl.dart'.
lib/screens/chat.dart:4:8: Error: Not found: 'package:intl/intl.dart'
import 'package:intl/intl.dart';
^
lib/screens/chat.dart:98:13: Error: 'DateFormat' isn't a type.
final DateFormat date_formatter = DateFormat('yyyy-MM-dd');
^^^^^^^^^^
lib/screens/chat.dart:99:13: Error: 'DateFormat' isn't a type.
final DateFormat time_formatter = DateFormat('hh:ss');
^^^^^^^^^^
lib/screens/chat.dart:98:41: Error: The method 'DateFormat' isn't defined for the class '_ChatState'.
- '_ChatState' is from 'package:active_ecommerce_flutter/screens/chat.dart' ('lib/screens/chat.dart').
Try correcting the name to the name of an existing method, or defining a method named 'DateFormat'.
final DateFormat date_formatter = DateFormat('yyyy-MM-dd');
^^^^^^^^^^
lib/screens/chat.dart:99:41: Error: The method 'DateFormat' isn't defined for the class '_ChatState'.
- '_ChatState' is from 'package:active_ecommerce_flutter/screens/chat.dart' ('lib/screens/chat.dart').
Try correcting the name to the name of an existing method, or defining a method named 'DateFormat'.
final DateFormat time_formatter = DateFormat('hh:ss');
^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/chewie-0.9.10/lib/src/chewie_player.dart:83:7: Error: No named parameter with the name 'resizeToAvoidBottomPadding'.
resizeToAvoidBottomPadding: false,
^^^^^^^^^^^^^^^^^^^^^^^^^^
/C:/src/flutter/packages/flutter/lib/src/material/scaffold.dart:1466:9: Context: Found this candidate, but the arguments don't match.
const Scaffold({
^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/chewie-0.9.10/lib/src/chewie_player.dart:276:17: Error: The method 'inheritFromWidgetOfExactType' isn't defined for the class 'Bui
ldContext'.
- 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try correcting the name to the name of an existing method, or defining a method named 'inheritFromWidgetOfExactType'.
context.inheritFromWidgetOfExactType(_ChewieControllerProvider)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/chewie_audio-1.0.0+1/lib/src/chewie_player.dart:101:17: Error: The method 'inheritFromWidgetOfExactType' isn't defined for the cla
ss 'BuildContext'.
- 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try correcting the name to the name of an existing method, or defining a method named 'inheritFromWidgetOfExactType'.
context.inheritFromWidgetOfExactType(_ChewieAudioControllerProvider)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.18.1/lib/src/picture_provider.dart:50:59: Error: No named parameter with the name 'nullOk'.
context != null ? Localizations.localeOf(context, nullOk: true) : null,
^^^^^^
/C:/src/flutter/packages/flutter/lib/src/widgets/localizations.dart:413:17: Context: Found this candidate, but the arguments don't match.
static Locale localeOf(BuildContext context) {
^^^^^^^^
Unhandled exception:
FileSystemException(uri=org-dartlang-untranslatable-uri

ackage%3Aintl%2Fintl.dart; message=StandardFileSystem only supports file:* and data:* URIs)
#0 StandardFileSystem.entityForUri (package:front_end/src/api_prototype/standard_f
ile_system.dart:36:7)
#1 asFileUri (package:vm/kernel_front_end.dart:599:37)
#2 writeDepfile (package:vm/kernel_front_end.dart:738:21)
<asynchronous suspension>
#3 FrontendCompiler.compile (package:frontend_server/frontend_server.dart:562:9)
<asynchronous suspension>
#4 starter (package:flutter_frontend_server/server.dart:180:12)
<asynchronous suspension>
#5 main (file:///C:/b/s/w/ir/cache/builder/src/flutter/flutter_frontend_server/bin/starter.dart:13:24)
<asynchronous suspension>
FAILURE: Build failed with an exception.
* Where:
Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1035
* What went wrong:
Execution failed for task ':app:compileFlutterBuildRelease'.
> Process 'command 'C:\src\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at
https://help.gradle.org
BUILD FAILED in 9m 32s
Running Gradle task 'assembleRelease'...
Running Gradle task 'assembleRelease'... Done 586.2s
Gradle task assembleRelease failed with exit code 1
Here is my flutter doctor v:
[√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 10.0.19042.1110], locale en-US)
• Flutter version 2.2.3 at C:\src\flutter
• Framework revision f4abaa0735 (3 weeks ago), 2021-07-01 12:46:11 -0700
• Engine revision 241c87ad80
• Dart version 2.13.4
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\Arko\AppData\Local\Android\Sdk
• Platform android-30, build-tools 30.0.3
• ANDROID_HOME = C:\Users\Arko\AppData\Local\Android\Sdk
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 51.0.1
• Dart plugin version 193.7547
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] Android Studio (version 4.1.0)
• Android Studio at C:\Program Files\Android\Android Studio1
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] VS Code (version 1.52.1)
• VS Code at C:\Users\Arko\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.18.1
[√] Connected device (2 available)
• Chrome (web) • chrome • web-javascript • Google Chrome 92.0.4515.107
• Edge (web) • edge • web-javascript • Microsoft Edge 91.0.864.71
• No issues found!
Process finished with exit code 0
Can you one help me plz?