Got an error.

[GalacticAir]

usage: OTFeatureFreezer.exe [-h] [-o [OUTPATH]] [-f FEATURES] [-s SCRIPT]
[-l LANG] [-z] [-S] [-U USESUFFIX]
[-R REPLACENAMES] [-i] [-r] [-n] [-v]
inpath
OTFeatureFreezer.exe: error: unrecognized arguments: -- C:\Users\parent\Downloads\Inter-Regular.otf

Anyone knows what might have caused this?

[kenmcd]

Take a look at the examples right above where you copied that code.
The examples show the proper syntax.
You are including stuff which should not be there - hence the error message.

[GalacticAir]

I see, thank you!

[GalacticAir]

OMGOSH THANK YOU SO MUCH IT WORKED!