problem after scaffolding


I wonder why scaffolding generates error !?? ### script/generate scaffold request

You hadn't entred the name of the controller, is this an error !?? Why not you didn't used this line : ### script/generate scaffold request controler_name

Or maybe, you entred a non-exsitng table, or the name of the table in your db wasn't in plural

I'm new in the RoR programming, and I wanna learn more about scaffolding that's why I insist Plz, could you tell us what was the real problem with scaffolding ??