the named parameter 'onpressed' is required

[Niyanth-guru]

Hey, I am trying to just get to know the scaffold widget, while giving the floatactionbutton widget I am getting this error:
The named parameter onPressed is required, but there is no corresponding argument
If I have to just add a onPressed action for the widget, then how is that the method followed in the Youtube video is not getting the same error? Can someone tell me if I have done something wrong?(Screenshot below for reference)

[JustRahman]

U should add onPressed function like:
floatingActionButton: FloatingActionButton(
child: Text("Text"),
backgroundColor: Colors.red,
onPressed: (){
print("Dont push this button");
},
),

[Rizwan201]

floatingActionButton: FloatingActionButton(
child: Text("Press"),
onPressed: ()=> print("Pressed"),
),