org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value' org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value' selenium selenium

org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value'


I was seeing the same issue. The problem only appears when using Chrome 65 (currently: dev channel). With Chrome 64 (both stable channel and beta channel) everything worked fine.

It turns out I had an old chromedriver installed. Specifically, I was using chrome=65.0.3325.51 with chromedriver=2.29.461585. Running npm install -g chromedriver bumped chromedriver to 2.35.528157 and now the problem is solved. Hope this helps!

TL;DR: run npm install -g chromedriver


The error says it all :

Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: call function result missing 'value'  (Session info: chrome=65.0.3325.31)  (Driver info: chromedriver=2.33.506120 (e3e53437346286c0bc2d2dc9aa4915ba81d9023f),platform=Windows NT 6.1.7601 SP1 x86) (WARNING: The server did not provide any stacktrace information)Command duration or timeout: 0 millisecondsBuild info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:32.194Z'  

Your main issue is the version compatibility between the binaries you are using as follows :

  • You are using chromedriver=2.33
  • Release Notes of chromedriver=2.33 clearly mentions the following :

Supports Chrome v60-62

  • You are using chrome=65.0
  • Release Notes of ChromeDriver v2.37 clearly mentions the following :

Supports Chrome v64-66

So there is a clear mismatch between the ChromeDriver version (v2.33) and the Chrome Browser version (v65.0)

Solution

  • Upgrade ChromeDriver to current ChromeDriver v2.37 level.
  • Keep Chrome version at Chrome v65.x levels. (as per ChromeDriver v2.37 release notes)
  • Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
  • Use CCleaner tool to wipe off all the OS chores before and after the execution of your test Suite.
  • If your base Web Client version is too old, then uninstall it through Revo Uninstaller and install a recent GA and released version of Web Client.
  • Execute your @Test.


The latest chrome browser requires corresponding latest chromedriver executable for the tests to run.