Permission denied error whenever i press start

When i press the start button to generate my model, i get this error

Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Program Files\WindowsApps\PythonSoftwareFoundatiinit__.py", line 2068, in __call__z5n2kfra8p0\Lib\tkinter\__i
return self.func(*args)
~~~~~~~~~^^^^^^^
File "C:\Users\Nino\Downloads\objmc-main\objmc-main\objmc.py", line 1096, in start
objmc(
~~~~~^
objs,
^^^^^
...<17 lines>...
),
^^
)
^
File "C:\Users\Nino\Downloads\objmc-main\objmc-main\objmc.py", line 623, in objmc
model = open(output[0], "w")
PermissionError: [Errno 13] Permission denied: 'potion.json'