InvalidSelectorException: Message: Locator Strategy 'css selector' is not supported for this session

[dflageole]

Platform you are automating: Android
Appium version: 1.8.0
Simulator/Emulator or Real Device: Emulator platformName=Android, platformVersion=7.1.1
The language you are using for writing tests (client binding): English I guess
Your OS: macOS Sierra 10.12.6 (16G1314)

My problem
Since Appium 1.8.0. I’m getting:
InvalidSelectorException: Message: Locator Strategy ‘css selector’ is not supported for this session
Using this:
Element Should Be Visible id=${appPackageMyPackage}:id/rowTitle

This worked fine in Appium 1.6.1 or 1.7.2

[dflageole]

I found a temporary workaround:

1. npm uninstall -g appium
2. npm install -g appium@1.7.2 --no-shrinkwrap

I hope this will be fixed in 1.8.0

[mikalaikarol]

I’m getting the same error. Is there anything better than downgrading appium?

[KazuCocoa]

1. Update to the lates client
2. Use proper driver defined for Appium, not for pure selenium webdriver

are common way to fix the issue
example => https://github.com/appium/appium/issues/10874