Getting error on Ionic cordova build android

Getting below error
(node:6364) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): [object Object]
(node:6364) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

cli packages: (C:\Users\HIT\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 8.0.0

local packages:

@ionic/app-scripts : 3.1.6
Cordova Platforms  : none
Ionic Framework    : ionic-angular 3.9.2


Node : v8.5.0
npm  : 5.3.0
OS   : Windows 10

Environment Variables:

ANDROID_HOME : D:\AndroidSdk\platform-tools


backend : pro

@sagarkodte hey u got solution if yes please tell me