运行java application时，总是报以下错误

Exception in thread "main" org.openqa.selenium.SessionNotCreatedException: Unable to create new remote session. desired capabilities = Capabilities [{appPackage=com.zhihu.android, appActivity=.app.ui.activity.MainActivity, platforName=Android, platformVersion=7.0, automationName=Appium, resertKeyboard=true, unicodeKeyboard=true, deviceName=lge-nexus_4-005475cbccd279d4}], required capabilities = Capabilities [{}]

Build info: version: '3.0.1', revision: '1969d75', time: '2016-10-18 09:48:19 -0700'

System info: host: 'DESKTOP-L4A6UVL', ip: '10.33.96.88', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_121'

Driver info: driver.version: AppiumDriver

at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:91)

at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:141)

at io.appium.java_client.remote.AppiumCommandExecutor.execute(AppiumCommandExecutor.java:69)

at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)

at io.appium.java_client.DefaultGenericMobileDriver.execute(DefaultGenericMobileDriver.java:42)

at io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:1)

at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:241)

at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:128)

at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:141)

at io.appium.java_client.DefaultGenericMobileDriver.(DefaultGenericMobileDriver.java:38)

at io.appium.java_client.AppiumDriver.(AppiumDriver.java:89)

at io.appium.java_client.AppiumDriver.(AppiumDriver.java:113)

at com.appium.test.AppTest.main(AppTest.java:27)