My Flutter project suddenly stopped working [closed] - flutter

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I have no idea what happened. It was working until yesterday.
When I try to run it now, An error keeps coming.
This is the complete Debug Console Log
Launching lib/main.dart on sdk gphone64 arm64 in debug mode...
../../../../.pub-cache/hosted/pub.dev/syncfusion_flutter_pdf-20.4.49/lib/src/pdf/implementation/forms/pdf_xfdf_document.dart:38:35: Error: The argument type 'String?' can't be assigned to the parameter type 'Object' because 'String?' is nullable and 'Object' isn't.
- 'Object' is from 'dart:core'.
builder.attribute('href', _pdfFilePath);
^
Target kernel_snapshot failed: Exception
FAILURE: Build failed with an exception.
* Where:
Script '/Users/stunntechinnovations/Documents/Softwares/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 1151
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command '/Users/stunntechinnovations/Documents/Softwares/flutter/bin/flutter'' 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 27s
Exception: Gradle task assembleDebug failed with exit code 1
Exited
I can't seem to find any issues with flutter, dart or any of the configurations.
Flutter doctor -v output given below
[✓] Flutter (Channel stable, 3.7.3, on macOS 13.2 22D49
darwin-arm64, locale en-IN)
• Flutter version 3.7.3 on channel stable at
/Users/stunntechinnovations/Documents/Softwares/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 9944297138 (34 hours ago), 2023-02-08
15:46:04 -0800
• Engine revision 248290d6d5
• Dart version 2.19.2
• DevTools version 2.20.1
[✓] Android toolchain - develop for Android devices (Android SDK
version 33.0.0)
• Android SDK at
/Users/stunntechinnovations/Library/Android/sdk
• Platform android-33, build-tools 33.0.0
• Java binary at: /Applications/Android
Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build
11.0.12+0-b1504.28-7817840)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14C18
• CocoaPods version 1.11.3
[✓] Chrome - develop for the web
• Chrome at /Applications/Google
Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2021.2)
• Android Studio at /Applications/Android Studio.app/Contents
• 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
11.0.12+0-b1504.28-7817840)
[✓] VS Code (version 1.75.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.58.0
[✓] Connected device (3 available)
• sdk gphone64 arm64 (mobile) • emulator-5554 • android-arm64
• Android 12 (API 31) (emulator)
• macOS (desktop) • macos • darwin-arm64
• macOS 13.2 22D49 darwin-arm64
• Chrome (web) • chrome • web-javascript
• Google Chrome 110.0.5481.77
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!
can it be any package-related issues? I tried changing the package versions, but it only seemed to complicate the issue more.
pubspec.yaml
name: kaigo
description: A new Flutter project.
publish_to: 'none'
version: 1.0.0+2
environment:
sdk: ">=2.17.3 <3.0.0"
dependencies:
intl: ^0.18.0
flutter_localizations:
sdk: flutter
flutter:
sdk: flutter
cupertino_icons: ^1.0.2
google_fonts: ^3.0.1
get: ^4.6.5
flutter_screenutil: ^5.5.3+2
bot_toast: ^4.0.2
dropdown_button2: ^1.6.3
flutter_svg: 1.1.1+1
dio: ^4.0.6
shared_preferences: ^2.0.15
dotted_border: ^2.0.0+2
flutter_datetime_picker: ^1.5.1
json_annotation: ^4.6.0
camera: ^0.10.0
path: ^1.8.1
path_provider: ^2.0.11
buttons_tabbar: ^1.3.6
persistent_bottom_nav_bar: ^4.0.2
google_maps_flutter: ^2.1.10
custom_marker: ^1.0.0
image_picker: ^0.8.5+3
firebase_auth:
flutter_spinkit: ^5.1.0
firebase_crashlytics: ^3.0.1
shimmer: ^2.0.0
firebase_core: ^2.4.0
firebase_analytics: any
email_validator: ^2.1.17
readmore: ^2.2.0
multiselect: ^0.0.7
checkbox_grouped: ^1.8.1
qr_code_scanner: ^1.0.1
carousel_slider: ^4.1.1
syncfusion_flutter_pdfviewer: ^20.2.50-beta
cloud_firestore: ^4.0.1
permission_handler: ^10.0.1
flutter_html: ^2.0.0
url_launcher: ^6.1.6
favorite_button: ^0.0.4
firebase_messaging: ^14.0.0
flutter_local_notifications: ^12.0.4
pdf: ^3.8.4
printing: ^5.9.3
open_file: ^3.2.1
expandable: ^5.0.1
bugsnag_flutter: ^2.4.0
visibility_detector: ^0.3.3
dependency_overrides:
flutter_svg: 1.1.1+1
pull_to_refresh: ^2.0.0
dev_dependencies:
flutter_test:
sdk: flutter
flutter_lints: ^2.0.0
json_serializable: ^6.1.4
build_runner: ^2.1.7
flutter_launcher_icons: ^0.10.0
dart_code_metrics: ^5.5.1
flutter_icons:
android: true
ios: true
remove_alpha_ios: true
image_path: "assets/images/logo_opaque.png"
flutter:
generate: true
uses-material-design: true
assets:
- .env.development
- assets/images/
- assets/svgs/
fonts:
- family: NotoSansJP
fonts:
- asset: assets/fonts/NotoSansJP-Thin.otf
weight: 100
- asset: assets/fonts/NotoSansJP-Light.otf
weight: 200
- asset: assets/fonts/NotoSansJP-Light.otf
weight: 300
- asset: assets/fonts/NotoSansJP-Regular.otf
weight: 400
- asset: assets/fonts/NotoSansJP-Medium.otf
weight: 500
- asset: assets/fonts/NotoSansJP-Medium.otf
weight: 600
- asset: assets/fonts/NotoSansJP-Bold.otf
weight: 700
- asset: assets/fonts/NotoSansJP-Bold.otf
weight: 800
- asset: assets/fonts/NotoSansJP-Black.otf
weight: 900
does anybody know how to fix this issue? Any help is appreciated.
Thank you in Advance