i am getting this error while adding the code snippet for inventory to my game. can someone explain it?

[ShivamKR12]

i am getting this error while adding the code snippet for inventory to my game. can someone explain it?

[ShivamKR12]

from ursina import *
from ursina.prefabs.first_person_controller import FirstPersonController
#from ursina.prefabs.exit_button import *

t = -1
app = Ursina()
a = Audio('assets/song_Forest.mp3', pitch=1, loop=True, autoplay=True)
a.volume=5
window.title = 'Minecraft_clone' # The window title
window.borderless = False # Show a border
window.fullscreen = False # Do not go Fullscreen
#window.exit_button.visible = False # Do not show the in-game red X that loses the window
window.fps_counter.enabled = True
window.cursor_hidden = False
#window.icon = "/assets/tree.jpg"

grass_texture = load_texture("assets/download.jpg")
sky_texture = load_texture("assets/sky.jpg")
soil_texture = load_texture("assets/soil.jpg")
tree_texture = load_texture("assets/tree.jpg")
plank_texture = load_texture("assets/planks.jpg")
leaf_texture = load_texture("assets/leaf.jpg")
wall_texture = load_texture("assets/wall.jpg")
stone_texture = load_texture("assets/stone.png")
iron_texture = load_texture("assets/images.png")
gold_texture = load_texture("assets/gold.png")
wall_2_texture = load_texture("assets/1.png")
current_texture = soil_texture

def update():
global current_texture
if held_keys['q']: exit()
if held_keys['Q']: exit()
if held_keys['1']: current_texture = grass_texture
if held_keys['2']: current_texture = soil_texture
if held_keys['3']: current_texture = tree_texture
if held_keys['4']: current_texture = plank_texture
if held_keys['5']: current_texture = leaf_texture
if held_keys['6']: current_texture = wall_texture
if held_keys['7']: current_texture = stone_texture
if held_keys['8']: current_texture = gold_texture
if held_keys['9']: current_texture = iron_texture
if held_keys['0']: current_texture = wall_2_texture

class Sky(Entity):
def init(self):
super().init(
parent=scene,
model='sphere',
scale=150,
texture=sky_texture,
double_sided=True
)

class Voxel(Button):
def init(self, position=(0, 0, 0), texture=grass_texture):
super().init(
parent=scene,
model='cube',
color=color.white,
texture=texture,
highlight_color=color.white,
position=position,
origin__y=0.5
)

def input(self, key):

    if self.hovered:
        if key == "left mouse down":
            voxel = Voxel(position=self.position + mouse.normal, texture= current_texture)
        if key == "right mouse down":
            destroy(self)

for z in range(6):
for x in range(6):
voxel = Voxel((x, 0, z), texture= grass_texture)
while t >= -10:
for z in range(6):
for x in range(6):
voxel = Voxel((x, t, z) , texture= soil_texture)
t-=1
player = FirstPersonController()
sky = Sky()
app.run()

this is the code to which i am trying to add the code of the inventory, so please help me.

[Creator754915]

Can i have more details pls ?

[ShivamKR12]

ya, sure. so, i was trying to add inventory to a small game of mine but everytime i tryed to run the code, i got the same error (or similar error). i tryed many different iterations but non of them seemed to work properly. if you like, i can provide you with those codes that i tryed so you can look into it.