Error Log

org.openqa.selenium.WebDriverException: unknown error: keys should be a string   (Session info: headless chrome=80.0.3987.163)   (Driver info: chromedriver=80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882}),platform=Linux 4.4.0-177-generic x86_64) (WARNING: The server did not provide any stacktrace information) Command duration or timeout: 20 milliseconds Build info: version: '2.52.0', revision: '4c2593cfc3689a7fcd7be52549167e5ccc93ad28', time: '2016-02-11 11:22:43' System info: host: 'yak', ip: '127.0.0.1', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-177-generic', java.version: '1.8.0_242' Driver info: org.openqa.selenium.chrome.ChromeDriver Capabilities [{mobileEmulationEnabled=false, timeouts={implicit=0, pageLoad=300000, script=30000}, hasTouchScreen=false, platform=LINUX, acceptSslCerts=false, goog:chromeOptions={debuggerAddress=localhost:46365}, acceptInsecureCerts=false, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, setWindowRect=true, unexpectedAlertBehaviour=ignore, applicationCacheEnabled=false, rotatable=false, networkConnectionEnabled=false, chrome={chromedriverVersion=80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882}), userDataDir=/tmp/.com.google.Chrome.SHTusa}, takesHeapSnapshot=true, pageLoadStrategy=normal, strictFileInteractability=false, databaseEnabled=false, handlesAlerts=true, version=80.0.3987.163, browserConnectionEnabled=false, proxy={}, nativeEvents=true, locationContextEnabled=true, cssSelectorsEnabled=true}] Session ID: 22aba895aa769852305e8aeec39488f2
org.openqa.selenium.WebDriverException: unknown error: keys should be a string
  (Session info: headless chrome=80.0.3987.163)
  (Driver info: chromedriver=80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882}),platform=Linux 4.4.0-177-generic x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 20 milliseconds
Build info: version: '2.52.0', revision: '4c2593cfc3689a7fcd7be52549167e5ccc93ad28', time: '2016-02-11 11:22:43'
System info: host: 'yak', ip: '127.0.0.1', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-177-generic', java.version: '1.8.0_242'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{mobileEmulationEnabled=false, timeouts={implicit=0, pageLoad=300000, script=30000}, hasTouchScreen=false, platform=LINUX, acceptSslCerts=false, goog:chromeOptions={debuggerAddress=localhost:46365}, acceptInsecureCerts=false, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, setWindowRect=true, unexpectedAlertBehaviour=ignore, applicationCacheEnabled=false, rotatable=false, networkConnectionEnabled=false, chrome={chromedriverVersion=80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882}), userDataDir=/tmp/.com.google.Chrome.SHTusa}, takesHeapSnapshot=true, pageLoadStrategy=normal, strictFileInteractability=false, databaseEnabled=false, handlesAlerts=true, version=80.0.3987.163, browserConnectionEnabled=false, proxy={}, nativeEvents=true, locationContextEnabled=true, cssSelectorsEnabled=true}]
Session ID: 22aba895aa769852305e8aeec39488f2
	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:423)
	at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
	at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:327)
	at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:122)
	at org.openmrs.uitestframework.page.Page.setTextNoEnter(Page.java:193)
	at org.openmrs.uitestframework.page.Page.setText(Page.java:187)
	at org.openmrs.uitestframework.page.Page.setText(Page.java:171)
	at org.openmrs.reference.page.RegistrationPage.enterPatientGivenName(RegistrationPage.java:154)
	at org.openmrs.reference.page.RegistrationPage.enterPatient(RegistrationPage.java:74)
	at org.openmrs.contrib.qaframework.automation.RegistrationTest.userEntersPatient(RegistrationTest.java:49)
	at ?.And User enters "incomplete" patient details(registration.feature:6)