KivyMD: ‘MDDataTable’ Running the .KV to create a widget reports an error

@HeaTTheatR

hello i see the py code creation process in the routine works then i declare the widget in the .kv file i get an error

from kivy.lang import Builder
from kivy.factory import Factory
from kivymd.app import MDApp

Builder.load_string('''
<ExampleBanner@Screen>
    MDToolbar:
        title:'hello' 
        pos_hint:{'x':.3,'y':.3}
    
    
    
    MDDataTable:
        pos_hint:{"x": 0.5, "y": 0.5}
        size_hint:(0.9, 0.6)
        use_pagination:False
        column_data:[("No.", dp(30)),("Column 1", dp(40)),("Column 2", dp(40)),("Column 3", dp(40))]
        row_data:[("0", "1", "2", "3")]
        
''')


class Test(MDApp):
    def build(self):
        return Factory.ExampleBanner()


Test().run()