appium: chromedriver exited unexpectedly when switching to webview on Android real device

I tried with Appium 1.4.10 in Android 4.4.4 and 5.1 , then I updated chromedriver but it still fails to switch contexts

info: --> GET /wd/hub/session/4f75b033-c30f-427d-aa6f-0984919b7390/contexts {}
info: [debug] Getting a list of available webviews
info: [debug] executing cmd: /Users/necoleyu/Library/Android/sdk/platform-tools/adb -s 4d003d1a4d774169 shell "cat /proc/net/unix"
info: [debug] WEBVIEW_19172 mapped to pid 19172
info: [debug] Getting process name for webview
info: [debug] executing cmd: /Users/necoleyu/Library/Android/sdk/platform-tools/adb -s 4d003d1a4d774169 shell "ps"
info: [debug] Parsed pid: 19172 pkg: com.eg.android.MyAppRC
info: [debug] from: u0_a70,19172,1927,865880,140156,ffffffff,00000000,S,com.eg.android.MyAppRC
info: [debug] returning process name: com.eg.android.MyAppRC
info: [debug] Available contexts:
info: [debug] ["WEBVIEW_com.eg.android.MyAppRC"]
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.eg.android.MyAppRC
info: [debug] Responding to client with success: {"status":0,"value":["NATIVE_APP","WEBVIEW_com.eg.android.MyAppRC"],"sessionId":"4f75b033-c30f-427d-aa6f-0984919b7390"}
info: <-- GET /wd/hub/session/4f75b033-c30f-427d-aa6f-0984919b7390/contexts 200 169.846 ms - 126 {"status":0,"value":["NATIVE_APP","WEBVIEW_com.eg.android.MyAppRC"],"sessionId":"4f75b033-c30f-427d-aa6f-0984919b7390"}
info: --> POST /wd/hub/session/4f75b033-c30f-427d-aa6f-0984919b7390/context {"name":"WEBVIEW_com.eg.android.MyAppRC"}
info: [debug] Getting a list of available webviews
info: [debug] executing cmd: /Users/necoleyu/Library/Android/sdk/platform-tools/adb -s 4d003d1a4d774169 shell "cat /proc/net/unix"
info: [debug] WEBVIEW_19172 mapped to pid 19172
info: [debug] Getting process name for webview
info: [debug] executing cmd: /Users/necoleyu/Library/Android/sdk/platform-tools/adb -s 4d003d1a4d774169 shell "ps"
info: [debug] Parsed pid: 19172 pkg: com.eg.android.MyAppRC
info: [debug] from: u0_a70,19172,1927,865880,140156,ffffffff,00000000,S,com.eg.android.MyAppRC
info: [debug] returning process name: com.eg.android.MyAppRC
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.eg.android.MyAppRC
info: [debug] ["WEBVIEW_com.eg.android.MyAppRC"]
info: [debug] Available contexts: NATIVE_APP,WEBVIEW_com.eg.android.MyAppRC
info: [debug] Connecting to chrome-backed webview
info: Chromedriver: Set chromedriver binary as: /usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/chromedriver/mac/chromedriver
info: Chromedriver: Killing any old chromedrivers, running: ps -ef | grep /usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/chromedriver/mac/chromedriver | grep -v grep |grep -e '--port=9515\(\s.*\)\?$' | awk '{ print $2 }' | xargs kill -15
info: Chromedriver: Successfully cleaned up old chromedrivers
info: Chromedriver: Spawning chromedriver with: /usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/chromedriver/mac/chromedriver --url-base=wd/hub --port=9515
info: Chromedriver: [STDOUT] Starting ChromeDriver 2.15.322455 (ae8db840dac8d0c453355d3d922c91adfb61df8f) on port 9515
Only local connections are allowed.
info: JSONWP Proxy: Proxying [GET /status] to [GET http://127.0.0.1:9515/wd/hub/status] with no body
info: JSONWP Proxy: Got response with status 200: {"sessionId":"","status":0,"value":{"build":{"version":"alpha"},"os":{"arch":"x86_64","name":"Mac OS X","version":"10.10.3"}}}
info: JSONWP Proxy: Proxying [POST /session] to [POST http://127.0.0.1:9515/wd/hub/session] with body: {"desiredCapabilities":{"chromeOptions":{"androidPackage":"com.eg.android.MyAppRC","androidUseRunningApp":true,"androidDeviceSerial":"4d003d1a4d774169"},"loggingPrefs":{"performance":"ALL"}}}
info: JSONWP Proxy: Got response with status 200: {"sessionId":"3ce09e81fdc10e3047099cec625a4733","status":13,"value":{"message":"unknown error: Device 4d003d1a4d774169 is not online\n  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d...
info: JSONWP Proxy: Proxying [POST /session] to [POST http://127.0.0.1:9515/wd/hub/session] with body: {"desiredCapabilities":{"chromeOptions":{"androidPackage":"com.eg.android.MyAppRC","androidUseRunningApp":true,"androidDeviceSerial":"4d003d1a4d774169"},"loggingPrefs":{"performance":"ALL"}}}
info: JSONWP Proxy: Got response with status 200: {"sessionId":"5ab23b9d57130075fc3f30467b4ee5c9","status":13,"value":{"message":"unknown error: Device 4d003d1a4d774169 is not online\n  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d...
info: JSONWP Proxy: Proxying [POST /session] to [POST http://127.0.0.1:9515/wd/hub/session] with body: {"desiredCapabilities":{"chromeOptions":{"androidPackage":"com.eg.android.MyAppRC","androidUseRunningApp":true,"androidDeviceSerial":"4d003d1a4d774169"},"loggingPrefs":{"performance":"ALL"}}}
info: JSONWP Proxy: Got response with status 200: {"sessionId":"217db5306114ee00e76bc83e566c8f40","status":13,"value":{"message":"unknown error: Device 4d003d1a4d774169 is not online\n  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d...
info: JSONWP Proxy: Proxying [POST /session] to [POST http://127.0.0.1:9515/wd/hub/session] with body: {"desiredCapabilities":{"chromeOptions":{"androidPackage":"com.eg.android.MyAppRC","androidUseRunningApp":true,"androidDeviceSerial":"4d003d1a4d774169"},"loggingPrefs":{"performance":"ALL"}}}
info: JSONWP Proxy: Got response with status 200: {"sessionId":"14a4051e60e1a5bed2636495d3bcc4a2","status":13,"value":{"message":"unknown error: Device 4d003d1a4d774169 is not online\n  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d...
error: Chromedriver: Chromedriver exited unexpectedly with code null, signal SIGTERM
warn: Chromedriver for context WEBVIEW_com.eg.android.MyAppRC stopped unexpectedly
warn: Chromedriver quit unexpectedly, but it wasn't the active context, ignoring
error: Chromedriver: Error: An unknown server-side error occurred while processing the command. (Original error: unknown error: Device 4d003d1a4d774169 is not online
  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d922c91adfb61df8f),platform=Mac OS X 10.10.3 x86_64))
    at JWProxy.command$ (lib/proxy.js:149:15)
    at tryCatch (/usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/regenerator/runtime.js:67:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (/usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/regenerator/runtime.js:294:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (/usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/regenerator/runtime.js:100:21)
    at GeneratorFunctionPrototype.invoke (/usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/regenerator/runtime.js:136:37)
    at bound (domain.js:254:14)
    at GeneratorFunctionPrototype.runBound (domain.js:267:12)
    at run (/usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/node_modules/core-js/library/modules/es6.promise.js:89:39)
    at /usr/local/lib/node_modules/appium/node_modules/appium-chromedriver/node_modules/babel-runtime/node_modules/core-js/library/modules/es6.promise.js:100:28
    at process._tickDomainCallback (node.js:381:11)
 { [Error: An unknown server-side error occurred while processing the command. (Original error: unknown error: Device 4d003d1a4d774169 is not online
  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d922c91adfb61df8f),platform=Mac OS X 10.10.3 x86_64))]
  status: 13,
  value: { message: 'unknown error: Device 4d003d1a4d774169 is not online\n  (Driver info: chromedriver=2.15.322455 (ae8db840dac8d0c453355d3d922c91adfb61df8f),platform=Mac OS X 10.10.3 x86_64)' },
  httpCode: 200 }