I try to download the deforum extension, but keep encountering the current error no matter which method i tried.

[Kaxanto]

Error loading script: deforum.py
Traceback (most recent call last):
File "C:\Users\qefml\Downloads\webui\modules\scripts.py", line 218, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "C:\Users\qefml\Downloads\webui\modules\script_loading.py", line 13, in load_module
exec(compiled, module.dict)
File "C:\Users\qefml\Downloads\webui\extensions\Deforum\scripts\deforum.py", line 5, in
deforum_folder_name = os.path.sep.join(os.path.abspath(file).split(os.path.sep)[:-2])
NameError: name 'file' is not defined

Anyone can help?