CODEWITHSUNDEEP
flutterdart
mhs
mhs

Reputation: 165

Cannot run with sound null safety, Flutter

After updating environment: sdk: ">=2.12.0 <3.0.0"

This problem appeared to me :-

Launching lib\main.dart on Chrome in debug mode... lib\main.dart:1 Error: Cannot run with sound null safety, because the following dependencies don't support null safety:

For solutions, see https://dart.dev/go/unsound-null-safety Unhandled exception: Bad state: Unsupported Null Safety mode NonNullableByDefaultCompiledMode.Invalid, in null. #0 ProgramCompiler.emitModule (package:dev_compiler/src/kernel/compiler.dart:435:9)

#1 JavaScriptBundler.compile (package:frontend_server/src/javascript_bundle.dart:144:33) #2 FrontendCompiler.writeJavascriptBundle (package:frontend_server/frontend_server.dart:632:20) #3 FrontendCompiler.compile (package:frontend_server/frontend_server.dart:545:9)

#4 listenAndCompile. (package:frontend_server/frontend_server.dart:1105:11) the Dart compiler exited unexpectedly. Failed to compile application. Exited (sigterm)

Upvotes: 1

Views: 691

Answers (1)

Jorge Vieira
Jorge Vieira

Reputation: 3072

The libraries are not Null Safety yet, use sdk: ">=2.7.0 <3.0.0"

Upvotes: 1

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