Error TypeError: too many positional arguments on execute script

Libraries Appium
1

I create a python file with the following content for my custom python library

from robot.libraries.BuiltIn import BuiltIn

def scroll_page_to_the_bottom():
    BuiltIn().get_library_instance('AppiumLibrary').execute_script("mobile: scroll", {'direction': 'down'})

When I call from robot file with keyword scroll_page_to_the_bottom I got an error TypeError: too many positional arguments

I try to use other mobile command without argument such as mobile: deviceInfo and it works perfectly
Here is the working execute_script from my code

BuiltIn().get_library_instance('AppiumLibrary').execute_script("mobile: deviceInfo")

My question is how to pass command with argument to execute_script?

referring to Execute Mobile Command - Appium, already use the correct format execute_script("mobile: scroll", {'direction': 'down'}) but got an error TypeError: too many positional arguments from robot execution