Flutter Error Case Solution

Common Case

1. The lower bound of “sdk: ‘>=2.7.0 <3.0.0’” must be 2.12.0’ or higher to enable null safety.

The current Dart SDK (3.2.3) only supports null safety. flutter pub get

#pubspec.yaml

environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: '>=3.2.2 <4.0.0'   

Android Case

1. Flutter android build.gradle unable to resolve class GradleException

Remove the new keyword before GradleException.

# android/app/build.gradle
throw GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")

Ios Case

1. Create requirement setting

Error (Xcode): Sandbox: rsync(27129) deny(1) file-write-create

Could not build the precompiled application for the device.
Error (Xcode): Sandbox: rsync(27129) deny(1) file-write-create
"<Project Root>/build/ios/Debug-iphoneos/Flutter.framework"

Error (Xcode): Sandbox: dart(27098) deny(1) file-write-create
"<Project Root>/build/ios/Debug-iphoneos/.last_build_id"

Error (Xcode): Flutter failed to write to a file at
"<Project Root>/build/ios/Debug-iphoneos/.last_build_id".

# info.plist > Build Settings
open ios/Runner.xcodeproj/
ENABLE_USER_SCRIPT_SANDBOXING = NO

1. The request to open “io.cpeso.test” failed.

Verify that the Developer App certificate for your account is trusted on your device. Open Settings on the device and navigate to General -> VPN & Device Management, then select your Developer App certificate to trust it.

1. Error: Could not find included file ‘Generated.xcconfig’ in search paths (in target ‘Runner’)

Try running flutter build ios and then rerun in Xcode

1. fatal error: module ‘firebase_core’ not found

open terminal cd “your-project”/ios pod install