[error] error occured while building the android app

C:\dev\sencha-root\Tracker\.sencha\app\phonegap-impl.xml:170: The following error occurred while executing this line:
jar:file:/C:/dev/sencha-cmd/Sencha/Cmd/5.1.3.61/sencha.jar!/com/sencha/ant/antlib.xml:644: shellscript returned: 1

Solution: Generate and upload an Android signing key of Adobe BD.

Instructions :
http://docs.build.phonegap.com/en_US/signing_signing-android.md.html

keytool -genkey -v -keystore bonzaiKeyAndroid.keystore -alias bonzaiKey -keyalg RSA -keysize 2048 -validity 10000

Then upload this key on
https://build.phonegap.com/apps