Почему не запускается скомпилированная программа python kivy?

Question

[Бебронюх Смачный]

У меня windows 10 pro.

Написал на python kivy программу.

from kivy.app import App
from  kivy.uix.gridlayout import GridLayout
from  kivy.uix.button import Button
from  kivy.uix.label import Label
from  kivy.uix.boxlayout import BoxLayout
from kivy.config import  Config



#Config.set('graphics','resizable',0)
#Config.set('graphics','width',400)
#Config.set('graphics','height',500)

class mainApp(App):

    def plm(self,instance):
        self.formula=str(int(self.formula) - int(self.formula)*2)
        self.lbl.text=self.formula

    def kv(self,instance):

        self.formula=str(int(self.formula) * int(self.formula))
        self.lbl.text=self.formula
    def kub(self,instance):

        self.formula=str(int(self.formula) * int(self.formula)* int(self.formula))
        self.lbl.text=self.formula


    def clean(self,instance):
        self.lbl.text = "0"
        self.formula = "0"

    def result(self,instance):
        exit=eval(self.lbl.text)
        if exit%1==0:
            exit=int(exit)
        self.lbl.text = str(exit)
        self.formula = str(exit)

    def update_label(self):
        self.lbl.text = self.formula


    def add_operation(self,instance):
        if ( str(instance.text).lower()=='x'):
            self.formula+=("*")
        else:

            if ( str(instance.text).lower()==':'):
                self.formula+=("/")

            else:
                self.formula+=str(instance.text)


        self.update_label()

    def add_num(self,instance):



        if (self.formula == "0"):
            self.formula=""
        self.formula+=str(instance.text)
        print(self.formula)
        self.update_label()
        

    def build(self):

        self.formula=""
        bls = BoxLayout (orientation = 'vertical')
        gls = GridLayout(cols = 4,size_hint = (1,.6))

    
        class btn(Button):
            font_size=30
            
        self.lbl=Label(text="0",font_size=35,halign="right",valign="center",size_hint=(1,.450),text_size=(400-50,500*.4-50))
        bls.add_widget(self.lbl)

        gls.add_widget(btn(text="7",on_press=self.add_num))
        gls.add_widget(btn(text="8",on_press=self.add_num))
        gls.add_widget(btn(text="9",on_press=self.add_num))
        gls.add_widget(btn(text="x",on_press=self.add_operation))

        gls.add_widget(btn(text="4",on_press=self.add_num))
        gls.add_widget(btn(text="5",on_press=self.add_num))
        gls.add_widget(btn(text="6",on_press=self.add_num))
        gls.add_widget(btn(text="-",on_press=self.add_operation))

        gls.add_widget(btn(text="1",on_press=self.add_num))
        gls.add_widget(btn(text="2",on_press=self.add_num))
        gls.add_widget(btn(text="3",on_press=self.add_num))
        gls.add_widget(btn(text="+",on_press=self.add_operation))
        
        gls.add_widget(btn(text=":",on_press=self.add_operation))
        gls.add_widget(btn(text="0",on_press=self.add_num))
        gls.add_widget(btn(text=".",on_press=self.add_num))
        gls.add_widget(btn(text="=",on_press=self.result))

        gls.add_widget(btn(text="AC",on_press=self.clean))
        gls.add_widget(btn(text="x²",on_press=self.kv))
        gls.add_widget(btn(text="x³",on_press=self.kub))
        gls.add_widget(btn(text="±",on_press=self.plm))

        bls.add_widget(gls)

        return(bls)
    


mainApp().run()
a=input()

Скомпилировал в exe ....

Вот что происходит:

На python всё работает: