Крашится QT5 приложение

class Example(QMainWindow, Checkout_cash_gui.Ui_MainWindow):
 
    def __init__(self):
 
        super().__init__()
 
        self.setupUi(self)
        self.pushButton.clicked.connect(self.test)
 
    def test(self):
 
        maz_input = socket.gethostbynameip = socket.gethostbyname('BO-'+self.mag.text()).split('.')
        cash_input = int(self.cash.text())-1
        date_input = self.dateEdit.text()
        check_input = self.check.text()
 
        cash = f'{mag_input[0]}.{mag_input[1]}.{mag_input[2]}.{str(int(mag_input[3]) + 14+cash_input)}'
        date = f'{date_input[6:10]}{date_input[3:5]}{date_input[0:2]}'
 
        user = 'test1'
        sec = '11'
 
        self.client = SSHClient()
        self.client.set_missing_host_key_policy(AutoAddPolicy())
        self.client.connect(hostname=cash, username=user, password=sec)
 
        command = """zcat /var/log/log/std_.log-"""+date+"""*.gz |sed -n "/BONNR = """+str(int(check_input)-1)+"""/,/BONNR = """+check_input+"""/p" |grep -a 'keyCode=11\|Add testr'"""
        
        stdin,stdout,stderr = self.client.exec_command(command)
        out = stdout.read().decode().strip().split('\n')
        for i in out:
            self.textEdit.append(i)
 
        client.close()
 
 
if __name__ == '__main__':
 
    app = QApplication(sys.argv)
 
    form = Example()
 
    form.show()
 
    app.exec()