Пытаюсь написать код на калькулятор. Выдает ошибку aborted (disconnected). Как такое исправить?

from PyQt5 import QtWidgets
from VIEW_Calculator import Ui_Calculator
 
class Calculator2(QtWidgets.QMainWindow, Ui_Calculator):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.show()
 
#реакция на нажатие 
       
        self.push_0.clicked.connect(self.digit_pressed)
        self.push_1.clicked.connect(self.digit_pressed)
        self.push_2.clicked.connect(self.digit_pressed)
        self.push_3.clicked.connect(self.digit_pressed)
        self.push_4.clicked.connect(self.digit_pressed)
        self.push_5.clicked.connect(self.digit_pressed)
        self.push_6.clicked.connect(self.digit_pressed)
        self.push_7.clicked.connect(self.digit_pressed)
        self.push_8.clicked.connect(self.digit_pressed)
        self.push_9.clicked.connect(self.digit_pressed)
        self.push_dot.clicked.connect(self.digit_pressed)
        self.push_pm.clicked.connect(self.digit_pressed)
        self.push_DEL.clicked.connect(self.digit_pressed)
        self.push_CLEAR.clicked.connect(self.digit_pressed)
        self.push_minus.clicked.connect(self.digit_pressed)
        self.push_plus.clicked.connect(self.digit_pressed)
        self.push_division.clicked.connect(self.digit_pressed)
        self.push_multiply.clicked.connect(self.digit_pressed)
        self.push_equally.clicked.connect(self.digit_pressed)
 
#нажатие на кнопку        
                    
    def digit_pressed(self):
        button = self.sender()
        if self.result == self.lineEdit.test():
            self.lineEdit.setText(button.text())
        else:
            self.lineEdit.setText(self.lineEdit.text() + botton.text())
        self.result = 0