Client side error

gistfile1.txt

org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value'
  (Session info: chrome=65.0.3325.109)
  (Driver info: chromedriver=2.33.506106 (8a06c39c4582fbfbab6966dbb1c38a9173bfb1a2),platform=Mac OS X 10.12.6 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.9.1', revision: '63f7b50', time: '2018-02-07T22:25:02.294Z'
System info: host: 'ttl001107.thetrainline.com', ip: 'fe80:0:0:0:ce7:6b8f:395d:6d72%en0', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.12.6', java.version: '1.8.0_65'
Driver info: io.appium.java_client.android.AndroidDriver
Capabilities {automationName: UIAutomator2, browserName: chrome, chromeDriverPort: 51888, deviceName: android, javascriptEnabled: true, platform: ANDROID, platformName: ANDROID, platformVersion: 7.0, systemPort: 51845, takesScreenshot: true, udid: SW85KVJRWS6TDQT4}
Session ID: 3a2ab739-e4f2-4d12-81b1-380d24b8838f
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
	at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
	at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
	at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:160)
	at io.appium.java_client.remote.AppiumCommandExecutor.execute(AppiumCommandExecutor.java:129)
	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 io.appium.java_client.android.AndroidDriver.execute(AndroidDriver.java:1)
	at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:279)
	at io.appium.java_client.DefaultGenericMobileElement.execute(DefaultGenericMobileElement.java:45)
	at io.appium.java_client.MobileElement.execute(MobileElement.java:1)
	at io.appium.java_client.android.AndroidElement.execute(AndroidElement.java:1)
	at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:100)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at io.appium.java_client.pagefactory.ElementInterceptor.getObject(ElementInterceptor.java:40)
	at io.appium.java_client.pagefactory.interceptors.InterceptorOfASingleElement.intercept(InterceptorOfASingleElement.java:61)
	at io.appium.java_client.android.AndroidElement$$EnhancerByCGLIB$$b598166c.sendKeys(<generated>)