int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

[sajjad-salam]

int() argument must be a string, a bytes-like object or a real number, not 'NoneType' File "C:\Users\sajjad\Downloads\TikTok-Downloader-Bot\main.py", line 23, in workers = int(os.environ.get("4")) TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

in this line workers = int(os.environ.get("4"))