More pygame errors

[PyEH]

Attempting to help my son.
I cannot find the error or a reason

Extract

import png, os, pygame
pygame.init()

win = pygame.display.set_mode((1200,900))

pygame.display.set_caption("First Game")

WalkRight = pygame.image.load(os.path.join('Red_Knight_Right.png'))
WalkLeft = pygame.image.load(os.path.join('Red_Knight_left.png'))
bg = pygame.image.load(os.path.join('game background.png'))
char = pygame.image.load(os.path.join('Red Knight.png'))
Stab_left = pygame.image.load(os.path.join('Red_Knight_stab_Left.png'))

x = 500
y = 410
#varibles 
width = 40
height = 60
vel = 10
isJump = False
jumpcount = 10
left = False
right = False
Stab_left = False


def redrawGameWindow():
    
    win.blit(bg, (0,0))
    
  
    if left:
            win.blit(WalkLeft, (x,y))
            
    elif right:
            win.blit(WalkRight, (x,y))

    elif Stableft:
        win.blit(Stab_left)
 

Error:
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
  File "C:\Users\******\Downloads\python_game_resourses\knight_game_combat_testing_not.py", line 8, in <module>
    WalkRight = pygame.image.load(os.path.join('Red_Knight_Right.png'))
pygame.error: Couldn't open Red_Knight_Right.png

the image files are located in the same directory as the py file (C:\Users\******\Downloads\python_game_resourses\knight_game_combat_testing_not.py)
I have also attempted the code as follow:

WalkRight = pygame.image.load('Red_Knight_Right.png')
WalkLeft = pygame.image.load('Red_Knight_left.png')
bg = pygame.image.load('game background.png')
char = pygame.image.load('Red Knight.png')
Stab_left = pygame.image.load('Red_Knight_stab_Left')

Same result

I also attempted with .convert()


Why is it not picking it up ?

I have read the previous post on this topic and attempted all suggestions.