Error: Unknown device or simulator UDID

gistfile1.txt

[XCUITest] Error: Unknown device or simulator UDID: 'e72a1083c25ebf44c861e994e7b805258cf88344'
    at XCUITestDriver.determineDevice$ (../../lib/driver.js:605:17)
    at tryCatch (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:67:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:315:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at GeneratorFunctionPrototype.invoke (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:136:37)
    at process._tickCallback (internal/process/next_tick.js:103:7)
 Error: Unknown device or simulator UDID: 'e72a1083c25ebf44c861e994e7b805258cf88344'
    at XCUITestDriver.determineDevice$ (../../lib/driver.js:605:17)
    at tryCatch (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:67:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:315:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at GeneratorFunctionPrototype.invoke (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:136:37)
    at process._tickCallback (internal/process/next_tick.js:103:7)
[debug] [XCUITest] Not clearing log files. Use `clearSystemFiles` capability to turn on.
[MJSONWP] Encountered internal error running command: Error: Unknown device or simulator UDID: 'e72a1083c25ebf44c861e994e7b805258cf88344'
    at XCUITestDriver.determineDevice$ (../../lib/driver.js:605:17)
    at tryCatch (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:67:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:315:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at GeneratorFunctionPrototype.invoke (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:136:37)
    at process._tickCallback (internal/process/next_tick.js:103:7)
[HTTP] <-- POST /wd/hub/session 500 172 ms - 213 
[HTTP] --> POST /wd/hub/session {"capabilities":[{"desiredCapabilities":{"app":"/Users/venkateshsingh/Desktop/UCAutomation/App/ng-client-ios-jenkins-2017-12-29-06_20_29d.ipa","platformVersion":"11.1","automationName":"Xcuitest","bundleid":"com.vocera.ent.ngv.beta","useNewWDA":true,"platformName":"iOS","udid":"e72a1083c25ebf44c861e994e7b805258cf88344","deviceName":"iPhone 6","wdaConnectionTimeout":"1200000"}},{"requiredCapabilities":{}}]}
[debug] [MJSONWP] Calling AppiumDriver.createSession() with args: [null,null,[{"desiredCapabilities":{"app":"/Users/venkateshsingh/Desktop/UCAutomation/App/ng-client-ios-jenkins-2017-12-29-06_20_29d.ipa","platformVersion":"11.1","automationName":"Xcuitest","bundleid":"com.vocera.ent.ngv.beta","useNewWDA":true,"platformName":"iOS","udid":"e72a1083c25ebf44c861e994e7b805258cf88344","deviceName":"iPhone 6","wdaConnectionTimeout":"1200000"}},{"requiredCapabilities":{}}]]
[debug] [BaseDriver] Event 'newSessionRequested' logged at 1515062002223 (16:03:22 GMT+0530 (IST))
[MJSONWP] Encountered internal error running command: Error: You must include a platformName capability
    at AppiumDriver.getDriverForCaps (../../lib/appium.js:47:13)
    at AppiumDriver.createSession$ (../../lib/appium.js:163:28)
    at tryCatch (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:67:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:315:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at invoke (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:136:37)
    at enqueueResult (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:185:17)
    at F (/usr/local/lib/node_modules/appium/node_modules/core-js/library/modules/$.export.js:30:36)
    at AsyncIterator.enqueue (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:184:12)
    at AsyncIterator.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at Object.runtime.async (/usr/local/lib/node_modules/appium/node_modules/babel-runtime/regenerator/runtime.js:209:12)
    at AppiumDriver.createSession (../../lib/appium.js:192:36)
    at ../../../lib/basedriver/driver.js:207:24
    at tryCatcher (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/util.js:26:23)
    at Promise._settlePromiseFromHandler (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/promise.js:510:31)
    at Promise._settlePromiseAt (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/promise.js:584:18)
    at Promise._settlePromiseAtPostResolution (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/promise.js:248:10)
    at Async._drainQueue (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/async.js:128:12)
    at Async._drainQueues (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/async.js:133:10)
    at Immediate.Async.drainQueues (/usr/local/lib/node_modules/appium/node_modules/bluebird/js/main/async.js:15:14)
    at runCallback (timers.js:651:20)
    at tryOnImmediate (timers.js:624:5)
    at processImmediate [as _immediateCallback] (timers.js:596:5)
[HTTP] <-- POST /wd/hub/session 500 3 ms - 179