Дурацкая ошибка кодировки

в очередной раз вылезает ошибка

UnicodeDecodeError: 'charmap' codec can't decode byte 0x98 in position 747: character maps to <undefined>

и я не знаю как её побороть. После перезагрузки IDE питона код запускается но работает не так как надо( Надеюсь на помощь. Вот сам код:

python
# -*- coding: utf-8 -*-
import time
import sys
import random
from PyQt5 import QtCore, QtGui, QtWidgets
import pygame 
from pygame.locals import *
pygame.init()

# Настройка текста
# Назначение цветов
BLACK = (0, 0, 0)
global WHITE
WHITE = (255, 255, 255)
global mainClock
mainClock = pygame.time.Clock()

RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
# Настройка окна
global windowSurface
windowSurface = pygame.display.set_mode((1000, 1000), 0, 32)
pygame.display.set_caption(u'Привет, мир!')
global basicFont
basicFont = pygame.font.SysFont(None, 48)
class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName(u"Игра")
        Form.resize(589, 479)
        Form.setStyleSheet("QLabel{\n"
"background-color: white;\n"
"text-align: center;\n"
"}\n"
"\n"
"QPushButton{\n"
"background-color:white;\n"
"width:150px;\n"
"height:125px;\n"
"font-size:150px;\n"
"border: none;\n"
"text-align: center;\n"
"}\n"
"\n"
"\n"
"\n"
"\n"
"QPushButton:pressed{\n"
"background-color: light silver\n"
"}\n"
"\n"
"\n"
"")
        self.horizontalLayoutWidget = QtWidgets.QWidget(Form)
        self.horizontalLayoutWidget.setGeometry(QtCore.QRect(9, 339, 571, 137))
        self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.pushButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        self.pushButton.setObjectName("pushButton")
        self.horizontalLayout.addWidget(self.pushButton)
        self.pushButton_3 = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        self.pushButton_3.setObjectName("pushButton_3")
        self.horizontalLayout.addWidget(self.pushButton_3)
        self.pushButton_2 = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        self.pushButton_2.setObjectName("pushButton_2")
        self.horizontalLayout.addWidget(self.pushButton_2)
        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(6, 20, 551, 51))
        self.label.setObjectName("label")

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        global _translate
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.pushButton.setText(_translate("Form", "1"))
        self.pushButton_3.setText(_translate("Form", "2"))
        self.pushButton_2.setText(_translate("Form", "3"))
        self.label.setText(_translate("Form", u"ПОЛЕ ДЛЯ ОТВЕТОВ"))


class Dialog(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("class Dialog")
        self.resize(1200, 200)
        self.setStyleSheet('background-color: red;')
        #pass


class Form(QtWidgets.QWidget):
    def __init__(self):
        super(Form, self).__init__()
#        self.dialog = Dialog()                              # 
        ui = Ui_Form()
        ui.setupUi(self)

        self.dialog = Dialog()                               # +

       # ui.pushButton.clicked.connect(self.okno)
        ui.pushButton.clicked.connect(self.bp1)
        ui.pushButton_2.clicked.connect(self.bp2)
        ui.pushButton_3.clicked.connect(self.bp3)
        #ui.pushButton_3.clicked.connect(self.show_dialog)    # +
        #ui.pushButton_2.clicked.connect(self.hide_dialog)    # 
        def proverka():

            otvet_zagadka = zagadkaNumber + 1
            if otvet_zagadka == otvet:
                self.label.setText(_translate("Form", u"ВЕРНО"))
                Form.setStyleSheet("QLabel{\n"
"background-color: white;\n"
"text-align: center;\n"
"}\n"
"\n"
"QPushButton{\n"
"background-color:white;\n"
"width:150px;\n"
"height:125px;\n"
"font-size:150px;\n"
"border: none;\n"
"text-align: center;\n"
"}\n"
"\n"
"\n"
"\n"
"\n"
"QPushButton:pressed{\n"
"background-color: light silver\n"
"}\n"
"\n"
"\n"
"QLabel{\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: green;\n"
"background-color: white;\n"
"")

            if otvet_zagadka != otvet:
                self.label.setText(_translate("Form", u"НЕВЕРНО, ПОПРОБУЙ ЕЩЕ"))
                Form.setStyleSheet("QLabel{\n"
"background-color: white;\n"
"text-align: center;\n"
"}\n"
"\n"
"QPushButton{\n"
"background-color:white;\n"
"width:150px;\n"
"height:125px;\n"
"font-size:150px;\n"
"border: none;\n"
"text-align: center;\n"
"}\n"
"\n"
"\n"
"\n"
"\n"
"QPushButton:pressed{\n"
"background-color: light silver\n"
"}\n"
"\n"
"\n"
"QLabel{\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: red;\n"
"background-color: white;\n"
"") 

    def okno(self):
        #Вывод окна
        pyGame()

    # def show_dialog(self):
    #     self.dialog.show()

    # def hide_dialog(self):
    #     self.dialog.hide()

    def bp1(self):
        global otvet
        otvet = 1
        return otvet
    def bp2(self): 
        global otvet
        otvet = 2
        return otvet
    def bp3(self):
        global otvet
        otvet = 3
        return otvet


def random1():
        with open('zagadki.txt', 'r', encoding='UTF-8', ) as file:               
            global zagadka
            global zagadkaNumber
            lines = file.readlines()
            linesNumbers = [0, 2, 4, 6, 8, 10, 12]
            zagadkaNumber = random.choice(linesNumbers)
            zagadka = lines[zagadkaNumber]
            global text
            global textRect
            text = basicFont.render(zagadka, True, WHITE, BLUE)
            textRect = text.get_rect()
            textRect.centerx = windowSurface.get_rect().centerx
            textRect.centery = windowSurface.get_rect().centery   

def vivod_teksta():
        # Нанесение текста на поверхность


        windowSurface.blit(text, textRect)

def pyGame():

    global zagadka
    zagadka = random1() 

    # Настройка pygame
    pygame.init()









    # Нанесение на поверхность белого фона
    windowSurface.fill(WHITE)

    # Нанесение на поверхность зеленого многоугольника
    pygame.draw.polygon(windowSurface, GREEN, ((146, 0), (291, 106), (236, 277), (56, 277), (0, 106)))

    # Нанесение на поверхность синих линий
    pygame.draw.line(windowSurface, BLUE, (60, 60), (120, 60), 4)
    pygame.draw.line(windowSurface, BLUE, (120, 60), (60, 120))
    pygame.draw.line(windowSurface, BLUE, (60, 120), (120, 120), 4)

    # Нанесение на поверхность синего круга
    pygame.draw.circle(windowSurface, BLUE, (300, 50), 20, 0)

    #Нанесение на поверхность красного эллипса.
    pygame.draw.ellipse(windowSurface, RED, (300, 250, 40, 80), 1)

    #Нанесение на поверхность фонового прямоугольника для текста.
    pygame.draw.rect(windowSurface, RED, (textRect.left - 500, textRect.top - 500, textRect.width + 100, textRect.height + 100))

    # Получение массива пикселов поверхности
    pixArray = pygame.PixelArray(windowSurface)
    pixArray[480][380] = BLACK
    del pixArray

    vivod_teksta()
    pygame.display.flip()
    pygame.display.update()
    mainClock.tick(40 )    
    Form().proverka()




    # Запуск игрового цикла
    while True:
        for event in pygame.event.get():
            if event.type == KEYDOWN :
                if event.key == K_ESCAPE:
                    pygame.quit()

                    return                                              
            if event.type == QUIT:
                pygame.quit()
                return                                                  
#                sys.exit()


pyGame()
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    w = Form()
    w.show()
    sys.exit(app.exec_())