Dart-Code: Dart DevTools exited with code 255 Flutter VS Code

When I try to open Dart DevTools in VS CODE. Shows error that “Dart DevTools exited with code 255”. Here is my flutter doctor -v output

PS D:\FlutterProjects\expenses_app> flutter doctor -v [√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version 10.0.18362.720], locale en-US) • Flutter version 1.12.13+hotfix.9 at D:\Flutter\flutter • Framework revision f139b11009 (5 days ago), 2020-03-30 13:57:30 -0700 • Engine revision af51afceb8 • Dart version 2.7.2

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3) • Android SDK at D:\AndroidSDKComponentSetup • Android NDK location not configured (optional; useful for native profiling support) • Platform android-29, build-tools 29.0.3 • ANDROID_HOME = D:\AndroidSDKComponentSetup • Java binary at: D:\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04) • All Android licenses accepted.

[!] Android Studio (version 3.6) • Android Studio at D:\Android Studio X Flutter plugin not installed; this adds Flutter specific functionality. X Dart plugin not installed; this adds Dart specific functionality. • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] VS Code (version 1.43.2) • VS Code at C:\Users\SagarKhurana\AppData\Local\Programs\Microsoft VS Code • Flutter extension version 3.8.1

[√] Connected device (3 available) • SM J200G • 320136c19c48b45b • android-arm • Android 5.1.1 (API 22) • Redmi 8 • ad4810d10506 • android-arm64 • Android 9 (API 28) • Android SDK built for x86 • emulator-5554 • android-x86 • Android 10 (API 29) (emulator)

! Doctor found issues in 1 category.

Thanks

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 1
Comments: 17 (7 by maintainers)

Most upvoted comments

That message means pub could not be find in your PATH environment variable. You could either:

Add the Dart SDK’s bin folder to your PATH (see https://www.computerhope.com/issues/ch000549.htm)
Use the full path to pub, like "C:\Dart\bin\pub" global activate devtools

DanTup on Apr 13, 2020

@laurameckley-wk feel free to open a new issue here if you want and we can get a full log to see if it’s a known issue.

@sagarkhurana00786 aha, that looks right - the logs include this error:

Invalid argument(s): A directory corresponding to fileSystemPath "C:\Users\Sagar Khurana\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\devtools-0.2.3\build" could not be found
#0      createStaticHandler (package:shelf_static/src/static_handler.dart:50:5)

Can you try running:

pub global deactivate devtools
pub global activate devtools

And then in your project folder run:

pub get

Also, if you haven’t rebooted since changing your username, do that too.

Let me know if you still see this issue after those steps.

DanTup on Apr 9, 2020