Python Selenium driver.execute_script WebDriverException: Message: unknown error: call function result missing 'value'

Solution 1:

The error says it all :

WebDriverException: Message: unknown error: call function result missing 'value'
  (Session info: chrome=65.0.3325.162)
  (Driver info: chromedriver=2.33.506106 

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

• Your Selenium Client version is unknown to us.

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

Solution

• Upgrade Selenium to current levels Version 3.11.0.
• Upgrade ChromeDriver to current ChromeDriver v2.37 level.
• Keep Chrome version in between Chrome v64.x-66.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.

Solution 2:

I think you can use such code for this:

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

Hope it helps you!