Unable to build or preview an Android app on fuse@1.4

when i do fuse preview -tandroid or fuse build -tandroid, after a few moment i have an error

fuse build -tandroid
Uno 1.4.3 (build 6115) Windows 10 x64 83d8656

 (13.1 s)

Compiling syntax tree

Icons\IconBase.uno(11.57): W4139: Uno.IO.BundleFileImporter is obsolete: 'Use import(FILENAME) instead'

(4.0 s)

Generating code and data
 (52.2 s)
Building Android app

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> java.lang.NullPointerException (no error message)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

(unknown): E0200: Android build failed


Total time: 35.606 secs
(40.6 s)

Build completed in 110.42 seconds
    1 warning
    1 error

fuse: Errors were encountered while building the project

these are my technical informations
fuse verion : Fuse version 1.4.0 (build 14778)
windows version : windows professional 10 X64
i use Fuse material design by Duckers

please, what wrong to my fuse installation :frowning:

It’s hard to say without knowing where the NullPointerException is coming from. If you have Android Studio installed, you could try running fuse build -tandroid -d to check if the project opens in it, and then shows some more information.

If it’s the build that fails and it doesn’t even get to opening Android Studio, you should try running the build with additional options, as suggested:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Hello, I was able to solve the problem. just uninstall fusetools and delete the folder containing the Android libraries (sdk, ndk, …) and redo a new installation.
now everything is OK.

Thank you