UE4 4.21.0 Android Build

Hello, when I try to Build an android packed I become every time the same error but on ue4 4.20.3 works it perfectly.
Error:

UATHelper: Packaging (Android (ATC)): ERROR: cmd.exe failed with args /c “D:\UE4 Pro\Android_Zero 4.21\Intermediate/Android/APK\gradle\rungradle.bat” :app:assembleDebug
UATHelper: Packaging (Android (ATC)): (see C:\Users\Florian\AppData\Roaming\Unreal Engine\AutomationTool\Logs\E+UE_4.21\Log.txt for full exception trace)
UATHelper: Packaging (Android (ATC)): AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: Packaging (Android (ATC)): BUILD FAILED
PackagingResults: Error: cmd.exe failed with args /c “D:\UE4 Pro\Android_Zero 4.21\Intermediate/Android/APK\gradle\rungradle.bat” :app:assembleDebug
PackagingResults: Error: Unknown Error