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I'm getting this warning after using "Flutter Doctor" command after the installation of Dart using brew tap dart-lang/dart on MacOS Big Sur
Flutter (Channel stable, 3.7.0, on macOS 11.7.2 20G1020 darwin-x64,
locale
en-GB)
! Warning: dart on your path resolves to
/usr/local/Cellar/dart/2.19.1/libexec/bin/dart, which is not inside your
current Flutter SDK checkout at /Users/puneet/development/flutter.
Consider adding /Users/puneet/development/flutter/bin to the front of your
path.
Can you anyone tell me how can i resolve this issue?
I'm trying avoid this warning and run a code on android studio developed on flutter framework.
I resolve this warning by just uninstalling the dart sdk using this command -
brew uninstall dart
Since dart sdk already comes with flutter installation, you need not to install it seperately.
Here is how I solve this problem
My dart path on environmental variable was look like (Both user and system variable)
C:\src\dart-sdk\bin
Now I change it to
C:\src\dart-sdk\bin\dart.exe
and the problem resolved.
The Flutter framework also contains Dart. So, if you already installed Dart separately on your OS, remove Dart and its Path from your system. You should have only one Path that is: /Users/puneet/development/flutter/bin
SOLVED
when you update your flutter to the latest version this warning comes in your flutter doctor output:-
for solving this just go and open .zshrc and after that check your flutter bin path is like this:-
change your path into this:-
and then run flutter doctor again... PROBLEM SOLVED ☺️
I can build flutter project .
but I did catch warning by flutter doctor
I want fix .
warning code
[!] Flutter (Channel stable, 3.7.0, on macOS 13.0.1 22A400 darwin-arm64, locale ja-JP)
! Warning: `dart` on your path resolves to
/opt/homebrew/Cellar/dart/2.14.4/libexec/bin/dart, which is not inside your current Flutter SDK checkout at /Users/t/Developer/flutter.
Consider adding
/Users/t/Developer/flutter/bin to the front of your path.
tried
set -x PATH ~/development/flutter/bin $PATH
fltter clean
Just remove old dart from homebrew
brew remove dart
Important note from flutter documentation:
The Flutter SDK contains the dart command alongside the flutter command so that you can more easily run Dart command-line programs. Downloading the Flutter SDK also downloads the compatible version of Dart, but if you’ve downloaded the Dart SDK separately, make sure that the Flutter version of dart is first in your path, as the two versions might not be compatible.
The previous text means that flutter SDK has Dart SDK inside it, So you don't need to download dart separately.
To solve this proplem :
Delete the dart SDK that you download separately.
Go to the environment variables then select the Path from the user variables.
Change C:\src\dart-sdk\bin to C:\src\flutter\bin\dart
I solved it by adding the dart/ directory inside flutter/bin directory.
Hope this might help! :D
I fixed it by deleting the separate "dart-sdk" folder that I downloaded, and keeping the downloads from the flutter which has everything in it already.
Mine was in C \ tools \ dart-sdk
You may also have to change\delete the env path that had dart-sdk separate, and only keep the flutter\bin path. I have both flutter\bin & flutter\bin\dart. Not sure if both are needed but mine worked.
I was facing the same issue after upgraded to 3.7.x. In my case, I didn't set anything about Flutter in my .zshrc, I just created a symbolic link instead like this:
sudo ln -sfn /Users/lin/flutter/bin/flutter /usr/local/bin/flutter
So, when I am facing this issue, I think it would probably be working for Dart as well. Here is how I fixed it:
(1) Verify Dart:
which dart
It prompted dart not found
(2) Create a symbolic link for Dart:
sudo ln -sfn /Users/lin/flutter/bin/dart /usr/local/bin/dart
(3) Verify Dart again:
which dart
It prompts: /usr/local/bin/dart
dart --version
It prompts Dart SDK version: 2.19.2 (stable) (Tue Feb 7 18:37:17 2023 +0000) on "macos_x64"
(4) At this point, it will be working if you type:
flutter doctor -v
I upgraded my Flutter SDK and now my project is broken. I need to basically revert back to a Flutter SDK which uses Dart 1.x.
I tried the following in the pubspec.yaml,
environment:
sdk: ">=1.19.0 <2.0.0"
flutter: "^0.1.2"
dependencies:
flutter:
sdk: flutter
but now the project just simply doesn't build.
Running "flutter packages get" in binformed...
Package binformed requires Flutter SDK version ^0.1.2 but the current SDK is 0.2.5-pre.38.
pub get failed (1)
Do i need to uninstall the SDK and reinstall it?
Flutter is versioned using git. Changing the Flutter version is as simple as changing git branch.
There are 2 different ways:
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master.
We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number.
You can have the list of the available version numbers using flutter downgrade or here
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.
Run the following command to see a list of available versions.
flutter version
Then choose a version you want to switch to by running
flutter version v1.2.1
To undo and revert back to stable
flutter channel stable
flutter upgrade
In the Flutter install directory execute
git checkout v0.1.9
then run
flutter doctor
You can check which versions are available in the Flutter GitHub repository https://github.com/flutter/flutter
There is an open feature request to make this easier https://github.com/flutter/flutter/issues/14230
Don't use flutter version vX.X.X, use flutter downgrade instead.
Warning: "flutter version" will leave the SDK in a detached HEAD state. If you are using the command to return to a previously installed SDK version consider using the "flutter downgrade" command instead.
So, you should use
flutter downgrade
Edit:
If there had been no previous versions installed, the above command would fail. So, if you have a specific version of Flutter that you’d like to switch to, you can use the flutter version command:
flutter downgrade v1.17.0
You can find list of versions here
To downgrade there are many deprecated commands.
The two that actually work, and I've tested them, are:
flutter downgrade v[flutter build version]
For instance:
flutter downgrade v1.22.6
And the other one: go to your flutter sdk folder, that is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout [flutter build version]
For instance:
git checkout 1.22.3
Then do flutter doctor and you'll confirm you switched correctly.
You can check the versions on: https://flutter.dev/docs/development/tools/sdk/releases?tab=macos
And for details at: https://flutter.dev/docs/release/breaking-changes
If you happen to want to switch channel, just do:
flutter channel [channel]
For instance (choose one of master, stable, dev, beta):
flutter channel stable
And if you want to upgrade again:
flutter upgrade
Inorder for a proper downgrade to any version.
Change to Dev mode
flutter channel dev
flutter downgrade v(type your version number) eg below.
flutter downgrade v2.0.6
This worked for me !
Go to the terminal and type the specific version number, for eg -
flutter downgrade v1.22.3
Then just press enter.
After fetching the files from the internet, it will ask,
Downgrade flutter to version 1.22.5
? [y|n]:
Type y and it will downgrade to the specific version.
Restart the IDE for the settings to take place.
To solve these errors:
$ flutter version
Could not find a command named "version".
$ flutter downgrade v1.22.6
There is no previously recorded version for channel "stable".
Delete old flutter folder
Download the archive and unzip instead of deleted flutter folder
OR
cd "$(dirname $(which flutter))" then
git checkout . (optional)
git pull origin (optional)
git checkout v1.22.6
flutter doctor
p.s.
Don't forget to restart your android studio
At the moment, the easiest way to manage flutter versions is through fvm.
Install fvm
brew tap leoafarias/fvm
brew install fvm
Install your version
fvm install x.x.x
Install your version globally (if desired)
fvm global x.x.x
Here's a link to the app guide
https://fvm.app/docs/getting_started/installation
Just use flutter downgrade v2.8.0
then flutter ask for confirmation
Downgrade flutter to version 1.22.5
? [y|n]:
Type y for Yes to confirm changes
Download Flutter SDK release: flutter_windows_1.17.0-stable: https://flutter.dev/docs/development/tools/sdk/releases
Replace the existing Flutter folder to this version
Make sure that environment variables and Flutter + Dart Settings on your IDE
are still tied to this folder/path
Just flutter downgrade is enough, it will downgrade to previous stable version.
I find it a little tough to switch (upgrade/downgrade) to a specific Flutter version from the command line. Some of the answers here are outdated.
I prefer to download the SDKs for different versions from here manually.
Let's say I download 2.0.1, 2.0.5 and 2.0.6.
2.0.1 is the current Flutter SDK version for me.
To switch to 2.0.5, delete the current Flutter SDK (the one with the blue icon) and unzip flutter_macos_2.0.5-stable.zip. Then run flutter clean followed by flutter doctor to confirm that everything worked correctly.
This has the benefit of not having to change any paths or having to re-download the entire SDK every time you want to switch.
On macOS, if you get system warnings for not being able to run dart or gentool, then press Allow anyway under System Preferences > Security & Privacy
The simplest way to change your flutter version is to:
Navigate to this link and download the flutter version you want.
Extract the files and replace your older flutter directory with them.
If you were using flutter already then no need to redefine the PATH, else, make sure that environment variables are still tied to this folder/path.
Run flutter --version or flutter doctor to check that everything went ok.
I found 2-steps easy solution to migrate to any specific version of Flutter.
Navigate to Flutter repo path (Yes, the one we download from official website and unzipped it) in a terminal
Run the following command : git checkout 2.10.5 && flutter precache
Note: Verify & change the Flutter version from here
Open Terminal and Navigate to Flutter folder
Run the following command with the Flutter version you want to switch to:
git checkout 2.10.5 && flutter precache
Reference: https://github.com/flutter/flutter/issues/64238#issuecomment-678605514
All the answers are outdated and not working after the release of flutter 3.0.
My solution is somewhat complicated but will still work in May 2022 and after.
I will show you how to downgrade from flutter 3 to Flutter 1.22.6.
the first step is to locate where you have to install flutter files when you have installed them for the 1st time. Like mine is located in c:\src\flutter.
Cut the flutter folder and paste it somewhere. (note:- you have shutdown your android studio/vs code if running)
go to Flutter SDK releases and download the desired flutter version you want. I choose flutter 1.22.6 for windows.
now extract the downloaded flutter zip and paste in c:\src\flutter (or wherever your flutter was installed previously). (don't worry if you're thinking that your Environment Variables path will change, so that is not true, it will still work. you don't have to change anything in Environment variables)
After pasting the flutter extracted folder open android studio and go to File/Setting/language and framework/flutter and correct the Flutter SDK path to C:\src\flutter.(as shown in the image).
6. Now press apply and run flutter --version
if you are using brew (macos)
you can create rb file and use brew to install or downgrade flutter
create file with name flutter.rb
cask "flutter" do
version "2.2.0"
url "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_#{version}-st$
verified: "storage.googleapis.com/flutter_infra_release/"
name "Flutter SDK"
desc "UI toolkit for building applications for mobile, web and desktop"
homepage "https://flutter.dev/"
livecheck do
url "https://storage.googleapis.com/flutter_infra_release/releases/releases_macos.json"
regex(%r{/flutter[._-]macos[._-]v?(\d+(?:\.\d+)+)[._-]stable\.zip}i)
end
auto_updates true
binary "flutter/bin/dart"
binary "flutter/bin/flutter"
end
then use brew install ./flutter.rb to install flutter or downgrade flutter version
This solutions works in 2021
Go to your flutter SDK folder, which is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout (your flutter version)
then,
run flutter doctor
After this check your version.
To downgrade your flutter version:
Run flutter downgrade v2.5.3 or whatever flutter version you want from here.
If it resulted in any error like
There is no previously recorded version for channel "stable".
or that there is no previous version,
then, make sure to switch to the correct branch {stable, master, dev, beta} using the following command:
flutter channel master
Finally, Run flutter doctor to check that everthing went well.
These are the flowing step to downgrade any flutter version:
Step 1:
cd [your flutter sdk path]
Step 2:
git checkout [ enter your version ref ]
To get ref goto the url and copy your desired version ref.
https://docs.flutter.dev/development/tools/sdk/releases
Suppose I downgrade version 3.3.2
Step 3:
flutter doctor or flutter --version
Downgrade to a specific version on stable channel
Locate flutter path:
whereis flutter
On flutter folder execute
# clean the repo
git clean -fdx
git reset --hard
git fetch --all --prune
# list available tags starting with 2.10
git tag | grep 2.10
# checkout to stable on tag
git checkout stable
git reset --hard 2.10.5
Finally download the flutter tools
flutter doctor
The easiest way is to go to your flutter sdk, if you're on Linux open terminal and run flutter sdk-path then cd to the sdk path.
run git checkout <ref_of_sdk_you_want>. access the sdk versions here. after the switch, run flutter doctor and restart your IDE, that's it.
You can switch between versions using this way.
Steps to change the Flutter version is as simple as changing the git branch.
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master. We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number. You can have the list of the available version numbers using flutter downgrade
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.
flutter app was working getting build and run on Xcode 10 on device iOS 12 fine before,
The time dart upgrade 2.1.0 happen in Flutter build iOS worked well with command and on Xcode 10 after build get success while running Flutter app on iPhone 7 iOS 12, it started giving error and app gets crash with following error message in Xcode logs.
Error is Runner[410:28754] [VERBOSE-3:dart_vm.cc(403)] Error while initializing the Dart VM: Wrong full snapshot version, expected '8343f188ada07642f47c56e518f1307c' found '46b2bfb57b5647c5f7527ff9aa56c69b'
Here are the details of the flutter sdk and dart .
Flutter 0.11.9 • channel beta • https://github.com/flutter/flutter.git
Framework • revision d48e6e4
Engine • revision 5c8147450d
Tools • Dart 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)
I have experienced this error and none of the above solution worked for me infact the option of clearing the flutter/bin/cache messed the entire vscode IDE.
So I deleted the entire flutter SDK and installed fresh new SDK from flutter official website.
After this installation everything was working fine.
I had this issue after a flutter upgrade. Uninstalling the app from the device and then flutter running it again solved the problem.
After deleting the flutter/bin/cache and running flutter clean, I couldn't get the dart sdk to load until I launched the flutter console (flutter_console.bat) that can be found in the directory where you installed flutter and ran flutter doctor there. That solved the problem.
Do git clean -xffd in flutter installed directory(repo).
If it's a Flutter project first try flutter clean if did not work, try above git command.
If still not solved, delete everything inside /flutter/bin/cache and try.
If still not :D,
Do flutter channel master, flutter upgrade, and flutter clean. If nothing worked please add a comment below.
If you are in Dart environment out flutter/bin/cach/dart-sdk, you may be not upgraded dart-sdk. This happen to me Dart 2.5.0 with chololate installed. So I just did choco upgrade dart-sdk
I have exactly this problem i Solve it how ?
by these comments you just update flutter
flutter channel beta
,
flutter upgrade
you should upgrade your dart sdk
So try this command :
choco install dart-sdk
if this is not work for you download it from this link
https://dart.dev/tools/sdk/archive;
and replace it with your current dart-sdk in flutter
I also have experienced the same issue. I upgraded the flutter version and later downgraded and encounter this issue maily on IOS adhoc build.
Solution:
Delete out $FLUTTER_HOME/bin/cache and run flutter doctor.
This will solve.
What worked for me was changing channel and upgrading and then changing channel back and upgrading.
I had to remove the flutter SDK folder in my computer completely and redownload the latest one at https://flutter.dev/docs/get-started/install/macos
Then, I ran flutter doctor.
You can find where your flutter folder is by typing which flutter in your terminal.
You don't need to uninstall the whole flutter and set environment path or anything else.
Just downgrade to any version by doing the below commands, suppose my current flutter version is v3.3.8 and I come across this issue then:
Go to flutter sdk-path in the command prompt and checkout to any branch you would like to switch for a moment, like v2.5.0. So,
By doing this you changed your repository from v3.3.8 to v2.5.0
git checkout v2.5.0
You can check previous flutter versions from here
link
Downgrade your flutter version to 2.5.0
flutter downgrade v2.5.0
Then upgrade flutter
flutter upgrade
Log:
E:\Flutter>flutter doctor Checking Dart SDK version... Downloading
Dart SDK from Flutter engine ead227f a... Unzipping Dart SDK...
Updating flutter tool... Error: Unable to 'pub upgrade' flutter tool.
Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
First Make sure you have a working internet connection and if this issue still exists then, this error may be because the dart sdk may have not been properly downloaded.
The simplest solution is to delete the cache folder located in
flutter/bin(location where flutter is installed) and then Run flutter doctor
I fix that by:
Ctrl+C to stop infinite error loop.
Kill the Dart process in Windows Task Manager.
Delete the cache folder located in flutter/bin directory.
Run in command line flutter pub cache repair.
After that I run flutter doctor and get predictable results:
e:\tools>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version
6.1.7601], locale ru-RU)
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[√] Android Studio (version 3.6)
[!] IntelliJ IDEA Community Edition (version 2019.2)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[!] IntelliJ IDEA Ultimate Edition (version 2019.2)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[√] VS Code (version 1.44.2)
[√] Connected device (1 available)
! Doctor found issues in 2 categories.
I found my antivirus blocks pub upgrade,I had same issue while hitting flutter doctor, I turned off my antivirus and tried to run "flutter doctor" again, and worked well!
windows:
simplest and easiest way is download the latest version flutter sdk. replace manually current folder by pasting downloaded flutter folder instead of the current folder
in c drive. always choose replace and paste.
after finishing that check with flutter doctor. my issue solved
Solved this issue when Run the CMD as administrative.
This issue will come in protected network as well as due to anti-virus. Even I was facing the same. I downloaded latest stable version manually from the following link, which doesn't required any update process and it works for now..
Download Link For Flutter in Zip format
I updated the flutter SDK via git pull, then the flutter doctor command works.
Just delete the cache folder in flutter/bin and run flutter doctor again!!
Just Deactivate your antivirus and run it again. It would work fine. I had the same issue before.
I deactivated my antivirus for some time and executed flutter doctor command once again in cmd and got fruitful results after hours of patience.
One more thing to note, you should ensure that path of dart-sdk folder should be added to the path in user variables.
It seems it is not being able to "unzip" the downloaded Dart file because it misses 7-zip uncompressor.
I installed it and it worked! It will deal with .7z files.
I hope it works for other people too!!
I had the same problem and it was solved.
Steps:
Download Dart and Filters SDK then Decompress these files and move them to this directory.
C: \
Define the variables in path:
Delete cache directory in flutter/bin
Then run flutter doctor
Make sure you downloaded the windows powershell i use windows 8 it wasn't installed by default , when i downloaded it it worked for me.
Check your flutter bin path in environment variable(User Variables). If not go to Under User variables check if there is an entry called Path:in that add this flutter/bin path.
Strangly when I kill the dart process in Windows Task Manager it is working. But sometimes even when dart process is running update working.
I had to turn off the Android Emulator. It was running for me...
I got the same error and was not able to get rid of it. So I deleted the flutter and instead of cloning it I downloaded the zip from the flutter website and extracted it. Now it works just fine.
Manually downloading the SDK from flutter website fixed the issue.
Still dont know why this problem occured tho.
If you are using Avast (or possibly some other anti virus too) on Mac and have recently updated the OS to Big Sur then follow the below steps to fix this issue
Open Avast and in the Web Shield area disable the "Scan secure connection".
Run flutter config --no-analytics and then run pub upgrade.
This should probably fix the issue.
You can also refer to below threads in Github for more details about the cause
https://github.com/flutter/flutter/issues/40515
https://github.com/flutter/flutter/issues/68999
In my case, the error resolve after adding below folder into exclude option in anti virus
Flutter SDK location
D:\Android\flutter_windows\flutter\*.
Flutter Local Pub folder
C:\Users\hitesh\AppData\Local\Pub
You get the error --
"Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (1 tries left)" even if you are in one of the flutter directories from Windows explorer. Close the window and try running Flutter doctor. This will resolve.
If anyone faces this problem on macOS with AdGuard installed. Try this:
Go AdGuard Preferences -> Network -> Automatically filter applications -> Select Mode... and change mode to Automatic Proxy.
Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
Tried switch to Dev channel and got stuck with "Unable to pub upgrade". Did everything and nothing worked.
This is what I did:
Renamed the Flutter SDK folder
Download the latest Flutter SDK
Extract to the same location of previous renamed SDK
Flutter channel Dev
Flutter upgrade
And everything back to normal.
Source of Problem
It might be possible that you don't have enough free disk space. That's what caused my problems to begin with.
Solution
In my case,
First I had to clean up space to remove any unused files.
Then I had to overwrite the flutter SDK folder due to corruption. The SDK can be found here.
I had the same issue with my MacBook M1. I tried deleting and running flutter pub cache repair But It didn't work for me.
Then I ran the command softwareupdate --install-rosetta and accepted the software licences & agreement (After installing XCode). Now the command flutter works fine. :)
Tried all of the above without success. The search order in the PATH system variable turned out to be the problem:
it was:
G:\My Drive\Compilers\flutter\bin;
G:\My Drive\Compilers\flutter\bin\flutter;
G:\My Drive\Compilers\flutter\bin\flutter.bat;
G:\My Drive\Compilers\flutter\bin\dart.exe;
G:\My Drive\Compilers\flutter\bin\dart;
G:\My Drive\Compilers\flutter\bin\dart.bat;
changed it to:
G:\My Drive\Compilers\flutter\bin\flutter
G:\My Drive\Compilers\flutter\bin\flutter.bat
G:\My Drive\Compilers\flutter\bin\dart
G:\My Drive\Compilers\flutter\bin\dart.bat
that fixed it
Mac auto iCloud upload might be causing the error
If you are using Mac and if your Desktop files are being uploaded to iCloud automatically, sometimes iCloud uploads the "bin" file or the "cache" file inside the flutter file. I've just downloaded the file onto desktop (right click the file -> "Download Now") and it downloaded the file, it ran as usual. (Automatic upload can be turned off from system preferences if youn are getting this error frequently like I was).
For my case, i was using ubuntu, and after reading the above comments, i have come to a resolution that the above error comes as a result of permissions being blocked, accessing cmd with admin access levels solves the problem, e.g on linux run sudo flutter doctor and the problem will be solved.
This error occured to me when i tried upgrading my flutter so it needed admin rights to be upgraded nothing much