TestFx How to click a Button with ImageView in a TableView

I write tests for my application with testfx. I have a tableview and add button for each row with imageview for update that row. I want to test this function with testfx, I searched but I couldn't solve the problem. Do you have any idea about this?

I try this but it gives an error:

Ambiguous method call. Both

clickOn(Node, MouseButton..) in FxRobotInterface and
clickOn(Matcher, MouseButton..) in FxRobotInterface match