[Python] TypeError: object.__init__() takes exactly one argument (the instance to initialize)

I am trying to make a form app and I don t understand the error:

TypeError: object.__init__() takes exactly one argument (the instance to initialize)


Code here;

class Myapp(App):
def build(self):
return Grid1()

class Grid1(GridLayout):
def __init__(self,**kwargs):
super(Grid1,self).__init__(**kwargs)
self.cols=1

self.inside=GridLayout()
self.inside.cols=2

self.inside.add_widget(Label(text="Your name is :"))
self.name=TextInput(multiline=False)
self.inside.add_widget(self.name)


self.inside.add_widget(Label(text="Your Last name is :"))
self.lastname=TextInput(multiline=False)
self.inside.add_widget(self.lastname)


self.inside.add_widget(Label(text="Your email is :"))
self.email=TextInput(multiline=False)
self.inside.add_widget(self.email)

self.submit=Button(text="Submit",font=40)
self.add_widget(self.submit)

if __name__=="__main__":
Myapp().run()

Error


File ".\kivyprima.py", line 38, in <module> Myapp().run()
File "C:\Users\Alex\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\app.py", line 829, in run root = self.build()
File ".\kivyprima.py", line 10, in build return Grid1()
File ".\kivyprima.py", line 34, in init self.submit=Button(text="Submit",font=40)
File "C:\Users\Alex\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\behaviors\button.py", line 121, in init

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