Getting Error in app when i run . Please Solved This Error/ Issus

[uniqekidz]

Launching lib\main.dart on SM A715F in debug mode... Running Gradle task 'assembleDebug'... Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01 Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01 Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01 Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01 Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01 /C:/flutter/.pub-cache/hosted/pub.dartlang.org/platform-3.0.0/lib/src/interface/local_platform.dart:46:19: Error: Member not found: 'packageRoot'. io.Platform.packageRoot; // ignore: deprecated_member_use ^^^^^^^^^^^ lib/src/features/quran/screen/option_screen.dart:107:38: Error: Required named parameter 'onChanged' must be provided. return DropdownButton( ^ /C:/flutter/packages/flutter/lib/src/material/dropdown.dart:865:3: Context: Found this candidate, but the arguments don't match. DropdownButton({ ^^^^^^^^^^^^^^ lib/src/features/quran/screen/option_screen.dart:248:38: Error: Required named parameter 'onChanged' must be provided. return DropdownButton( ^ /C:/flutter/packages/flutter/lib/src/material/dropdown.dart:865:3: Context: Found this candidate, but the arguments don't match. DropdownButton({ ^^^^^^^^^^^^^^ lib/src/features/quran/screen/option_screen.dart:358:38: Error: Required named parameter 'onChanged' must be provided. return DropdownButton( ^ /C:/flutter/packages/flutter/lib/src/material/dropdown.dart:865:3: Context: Found this candidate, but the arguments don't match. DropdownButton({ ^^^^^^^^^^^^^^

FAILURE: Build failed with an exception.

• Where: Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1102

• What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'C:\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 1m 24s Exception: Gradle task assembleDebug failed with exit code 1

if i removed Dropdown then issues is belows

/C:/flutter/.pub-cache/hosted/pub.dartlang.org/platform-3.0.0/lib/src/interface/local_platform.dart:46:19: Error: Member not found: 'packageRoot'. io.Platform.packageRoot; // ignore: deprecated_member_use ^^^^^^^^^^^

FAILURE: Build failed with an exception.

• Where: Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1102

• What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'C:\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 45s Exception: Gradle task assembleDebug failed with exit code 1