Cant get application launched, no errors are displayed. configuration error?

Hi i am unable to open application, please check the logs of Appium and let me know what im doing wrong. Its really frustrating as i am not getting any error as well, can anyone please help.

warn: Appium support for versions of node < 0.12 has been deprecated and will be removed in a future version. Please upgrade!
info: Welcome to Appium v1.4.13 (REV c75d8adcb66a75818a542fe1891a34260c21f76a)
info: Appium REST http interface listener started on 127.0.0.1:4723
info: [debug] Non-default server args: {“app”:“C:\Users\Rohit\Desktop\Appium\build\skillvo.apk”,“address”:“127.0.0.1”,“logNoColors”:true,“platformName”:“Android”,“platformVersion”:“23”,“automationName”:“Appium”}
info: Console LogLevel: debug
info: → POST /wd/hub/session {“desiredCapabilities”:{“app”:“C:\Users\Rohit\Desktop\Appium\build\skillvo.apk”,“app-package”:“com.skillvo”,“app-activity”:“com.skillvo.loginsignup.activity.LoginSignupActivity”,“platformName”:“Android”,“deviceName”:“TA91601BZ9”,“version”:“5.1”}}
info: Client User-Agent string: Apache-HttpClient/4.5.1 (Java/1.8.0_65)
info: [debug] The following desired capabilities were provided, but not recognized by appium. They will be passed on to any other services running on this server. : app-package, app-activity, version
info: [debug] No appActivity desired capability or server param. Parsing from apk.
info: [debug] No appPackage desired capability or server param. Parsing from apk.
info: [debug] Using local app from desired caps: C:\Users\Rohit\Desktop\Appium\build\skillvo.apk
info: [debug] Creating new appium session bd89fcfd-8ba7-4e47-b2d9-4c9fab7be091
info: Starting android appium
info: [debug] Getting Java version
info: Java version is: 1.8.0_66
error: Unhandled error: Error: ENOENT, no such file or directory ‘C:\android-sdk_r24.4.1-windows\build-tools’
at Object.fs.readdirSync (fs.js:654:18)
at exports.getDirectories (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\appium-adb\lib\helpers.js:100:18)
at [object Object].ADB.checkSdkBinaryPresent (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\appium-adb\lib\adb.js:97:25)
at [object Object].ADB.checkAdbPresent (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\appium-adb\lib\adb.js:134:8)
at Function.ADB.createADB (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\appium-adb\lib\adb.js:73:7)
at [object Object].androidCommon.initAdb (C:\Program Files (x86)\Appium\node_modules\appium\lib\devices\android\android-common.js:1083:9)
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:607:21
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:246:17
at iterate (C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:146:13)
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:157:25
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:248:21
at C:\Program Files (x86)\Appium\node_modules\appium\node_modules\async\lib\async.js:612:34
at [object Object]. (C:\Program Files (x86)\Appium\node_modules\appium\lib\devices\android\android-common.js:1077:12)
at [object Object]. (C:\Program Files (x86)\Appium\node_modules\appium\lib\devices\android\android-common.js:1064:12)
at ChildProcess.exithandler (child_process.js:635:7)
at ChildProcess.EventEmitter.emit (events.js:98:17)
at maybeClose (child_process.js:743:16)
at Socket. (child_process.js:956:11)
at Socket.EventEmitter.emit (events.js:95:17)
at Pipe.close (net.js:465:12) context: [POST /wd/hub/session {“desiredCapabilities”:{“app”:“C:\Users\Rohit\Desktop\Appium\build\skillvo.apk”,“app-package”:“com.skillvo”,“app-activity”:“com.skillvo.loginsignup.activity.LoginSignupActivity”,“platformName”:"]
info: [debug] Checking whether adb is present