/usr/local/bin/cordova run --emulator android
Android Studio project detected
ANDROID_HOME=/usr/local/Caskroom/android-platform-tools/27.0.1
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
(node:24129) UnhandledPromiseRejectionWarning: CordovaError: Requirements check failed for JDK 1.8 or greater
    at /Users/yinminqian/Desktop/MyApp/platforms/android/cordova/lib/check_reqs.js:370:19
    at _fulfilled (/Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:854:54)
    at self.promiseDispatch.done (/Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:883:30)
    at Promise.promise.promiseDispatch (/Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:816:13)
    at /Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:624:44
    at runSingle (/Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:137:13)
    at flush (/Users/yinminqian/Desktop/MyApp/platforms/android/cordova/node_modules/q/q.js:125:13)
    at process._tickCallback (internal/process/next_tick.js:112:11)
(node:24129) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:24129) [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.

this is an error message. Should it be the pot of the environment?