老师你好，我这边在linux上测试时出现刚启动成功，session就自动断开了，不知道是怎么回事？
日志提示： Closing session, cause was 'Unexpected shutdown'
[AndroidDriver] Screen already unlocked, doing nothing
[debug] [ADB] Running '/opt/android/android-sdk-linux/platform-tools/adb -P 5037 -s PWHNW19807015665 shell am start -W -n cn.com.agree.sdk.runtime/cn.com.agree.abc.sdk.app.MainActivity -S -a android.intent.action.MAIN -c android.intent.category.LAUNCHER -f 0x10200000'
[Appium] New AndroidDriver session created successfully, session ff082238-2c4b-4e1d-852b-b5fce7636f41 added to master session list
[Appium] Closing session, cause was 'Unexpected shutdown'
[Appium] Removing session ff082238-2c4b-4e1d-852b-b5fce7636f41 from our master session list
[debug] [BaseDriver] Event 'newSessionStarted' logged at 1576078025973 (23:27:05 GMT+0800 (China Standard Time))
[debug] [W3C (ff082238)] Cached the protocol value 'W3C' for the new session ff082238-2c4b-4e1d-852b-b5fce7636f41
[debug] [W3C (ff082238)] Responding to client with driver.createSession() result: {"capabilities":{"platform":"LINUX","webStorageEnabled":false,"takesScreenshot":true,"javascriptEnabled":true,"databaseEnabled":false,"networkConnectionEnabled":true,"locationContextEnabled":false,"warnings":{},"desired":{"platformName":"android","sessionOverride":true,"appActivity":"cn.com.agree.abc.sdk.app.MainActivity","appPackage":"cn.com.agree.sdk.runtime","automationName":"Appium","deviceName":"PWHNW19807015665","newCommandTimeout":600,"platformVersion":"9","resetKeyboard":true,"unicodeKeyboard":true},"platformName":"android","sessionOverride":true,"appActivity":"cn.com.agree.abc.sdk.app.MainActivity","appPackage":"cn.com.agree.sdk.runtime","automationName":"Appium","deviceName":"PWHNW19807015665","newCommandTimeout":600,"platformVersion":"9","resetKeyboard":true,"unicodeKeyboard":true,"deviceUDID":"PWHNW19807015665","deviceScreenSize":"1080x2310","deviceModel":"GLK-AL00","deviceManufacturer":"HUAWEI"}}
[HTTP] <-- POST /wd/hub/session 200 7793 ms - 983