Error at configure android platform on ubuntu 14.04

I have problems in $ ionic platform add android
Always appears the error:

/home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:126
throw e;
^
Error: An error occurred while listing Android targets
at /home/aasp/.cordova/lib/android/cordova/3.5.1/bin/lib/check_reqs.js:87:29
at _rejected (/home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:808:24)
at /home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:834:30
at Promise.when (/home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:1079:31)
at Promise.promise.promiseDispatch (/home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:752:41)
at /home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:574:44
at flush (/home/aasp/.cordova/lib/android/cordova/3.5.1/bin/node_modules/q/q.js:108:17)
at process._tickCallback (node.js:419:13)
Error: /home/aasp/.cordova/lib/android/cordova/3.5.1/bin/create: Command failed with exit code 8
at ChildProcess.whenDone (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/cordova/superspawn.js:135:23)
at ChildProcess.emit (events.js:98:17)
at maybeClose (child_process.js:756:16)
at Process.ChildProcess._handle.onexit (child_process.js:823:5)

Please tell me how could i solve the above error,
Thanks.

Jasvir Singh Sandhu