How can I fix "Checking Dart SDK version... << was unexpected at this time" error in Flutter?

Question

I am facing an issue any time I try to run any app or flutter command from the terminal, this is displayed: Checking Dart SDK version... << was unexpected at this time. Not even flutter doctor works.

Nothing seems to work and it's so frustrating as it happened out of the blue. One moment everything was fine, now nothing works. Any help will be appreciated

Check out this answer it worked for me; https://stackoverflow.com/a/73570267/17193926 — Lawrenceville, Sep 02 '22 at 06:57

score 12 · Accepted Answer · edited Oct 05 '21 at 13:20

I've resolved this error with the below steps:

Go to C:\Users\{Name}\.gradle} - Delete the .gradle directory.

Then Download and install the same flutter and dart SDK version in some other location and set the environment variables.

Example:

Environment variables Before :

("D:\FlutterExtractedFiles\flutter\bin")
("D:\FlutterExtractedFiles\flutter\bin\cache\dart-sdk\bin")`

Environment variables After :

("C:\edgedownloads\flutter_windows_v1.12.13+hotfix.8-stable\flutter\bin")
("C:\edgedownloads\flutter_windows_v1.12.13+hotfix.8-stable\flutter\bin\cache\dart-sdk\bin")

Then check the Android Studio event log

score 12 · Answer 2 · answered Sep 01 '22 at 13:34

12

I've resolved this error by following these steps:

Go to folder C:....\Flutter\
Run this command: git reset --hard HEAD

This will restore the flutter SDK folder to its original state, so no need to reinstall the SDK.

answered Sep 01 '22 at 13:34

Khalil Yamoun

133
1
4

This work for me, does this mean flutter files got corrupted ? – JKC Jul 13 '23 at 14:27

score 6 · Answer 3 · answered Oct 05 '21 at 13:17

Flutter reinstalled worked for me..

delete flutter folder in C directroy.
make a src folder in C: directory.
GoTo cmd and install flutter from official flutter github repoC:\src>git clone https://github.com/flutter/flutter.git -b stable

https://flutter.dev/docs/get-started/install/windows
run flutter doctor
set env path.
DONE

score 2 · Answer 4 · answered Oct 12 '21 at 08:43

2

What worked in my case was deleting the .gradle file (C:\Users\USER.gradle) and reinstalling Flutter in another location and changing the PATH to it.

answered Oct 12 '21 at 08:43

Thilo Jaeggi

87
1
9

score 1 · Answer 5 · edited Oct 10 '21 at 23:46

1

For me, the following steps resolved the problem:

Open cmd and run flutter doctor. (if there is an issue resolve them first.)
If not then change the flutter channel to dev. Whatever your channel is?. If this is the dev channel then change to master channel.
Again flutter doctor. If everything goes perfectly. then run your project. If it runs accordingly then again change to channel to stable.

edited Oct 10 '21 at 23:46

Dharman

30,962
25
85
135

answered Oct 09 '21 at 09:26

Shahryar Rafique

1,211
15
35

Stack Uses Markdown for formatting posts. Please see the [Markdown help](https://stackoverflow.com/editing-help) – Scratte Oct 10 '21 at 21:24

score 1 · Answer 6 · answered Oct 09 '21 at 10:04

1

you should try this

restart your pc and delete the flutter folder in C directory then reinstall flutter and run flutter doctor

answered Oct 09 '21 at 10:04

Nilrajsinh Vaghela

163
5

Mostafa Wael · Answer 7 · 2021-12-11T12:07:56.200

I faced this error before, all I had to do was to:

Remove Flutter from my C directory.
Install Flutter from the official website.
Run Flutter doctor: flutter doctor

No need for changing the PATH or any further actions.

If it worked fine with you then you are all done!

I faced another error after it, related to the Dart SDK and solved it using this link

the key is to install Android SDK Command-line Tools, steps being: Open Android Studio Tools Menu, SDK Manager In the window that comes up there are inner panels, choose SDK Tools panel Tick Android SDK Command-line Tools Choose Apply button near the bottom of the window At that point, you will be prompted to accept the SDK license and the command line tools will be installed. Your license issue should now be resolved.

score 0 · Answer 8 · answered Apr 13 '22 at 10:18

0

If your using Intelij and get the << error and none of the above work.

Delete the .intelij folder in your project and reopen the folder in intelij.

answered Apr 13 '22 at 10:18

Emile

11,451
5
50
63

score 0 · Answer 9 · edited Jul 17 '22 at 02:47

0

I faced this problem too and I've solved it by downloading SDK file again.

edited Jul 17 '22 at 02:47

Hamed

5,867
4
32
56

answered Jul 13 '22 at 21:35

Cem Yaşar Oğuz

11
2

score 0 · Answer 10 · edited Jul 04 '23 at 06:01

0

Delete flutter folder and re-install it again, then restart, its ok.

edited Jul 04 '23 at 06:01

Adnan Alshami

949
1
7
22

answered Jun 27 '23 at 12:51

JimAlef

1

How can I fix "Checking Dart SDK version... << was unexpected at this time" error in Flutter?

10 Answers10