Chromeが64.0.3282.186から65.0.3325.146へアップデートされたら例外が発生するようになりました。
Seleniumのバージョンが古くて3.6.0だったけれども最新の3.10.0に上げても変わらず。
問題は使っていたchrome driver 2.33が Chrome 65.xをサポートしていないことでした。
2.36にアップデートしたところ解決。
org.openqa.selenium.WebDriverException: unknown error: call function result missing ‘value’
Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value'
(Session info: chrome=65.0.3325.146)
(Driver info: chromedriver=2.33.506106 (8a06c39c4582fbfbab6966dbb1c38a9173bfb1a2),platform=Mac OS X 10.13.3 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.10.0', revision: '176b4a9', time: '2018-03-02T19:03:16.397Z'
System info: host: 'yMacBookPro15.local', ip: 'fe80:0:0:0:1866:9b0e:c8fd:926c%en0', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.3', java.version: '1.8.0_161'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptSslCerts: true, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.33.506106 (8a06c39c4582fb..., userDataDir: /var/folders/nn/96hc_7d966l...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: MAC, platformName: MAC, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 65.0.3325.146, webStorageEnabled: true}
Session ID: a8a70e68e89fb02ad65c84bf94582e65
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: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 org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:279)
at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:100)