Error with android sdk : Unable to compute a complete list of dependencies

Question

I'm installing Flutter without installing Android Studio by following a youtube guide. and in there, first I install git then installed Flutter via, Git and then installed java and set up JAVA_HOME and other env variables. after that I installed Android SDK Tools and tried to run two of the commands:

[1] sdkmanager.bat "build-tools;28.0.3" --sdk_root=../

[2] sdkmanager.bat "platforms;android-30" --sdk_root=../

The first command sdkmanager.bat "build-tools;28.0.3" --sdk_root=../ returns the following error:

Warning: Dependant package with key emulator not found!
Warning: Unable to compute a complete list of dependencies.
[===                                    ] 10% Computing updates...

but the second one runs fine.

So please help me resolve the error for command [1]!

Answer 1

You can try "build-tools;31.0.0" . I did and it worked for me.