selenium.common.exceptions.InvalidArgumentException: Message: invalid argument: invalid locator

Solution: Add the following two parameters when you create a driver.

desired_caps[‘chromeOptions’] = {‘w3c’:False}
desired_caps[‘showChromedriverLog’] = True

Refer:
Fail to locate an web element using “findElement” on Android 9 using Appium 1.15.0 · Issue #13306 · appium/appium · GitHub