Value does not fall within the expected range in Attribute Selector

Help
1

I am using Get Attribute Selector with chrome extension. After I validate the selector, validate button is green.
Selector :- “”
When I click on OK button, after validating the selector, selector field gets empty.
When I run this it throws error "Value does not fall within the expected range "error1

2

The error suggests it is the attach browser activity which has the issue and not ‘get attribute’

have you populated all the required overload items in the ‘attach browser’ activity?