Please do not use spaces in file names. example: Storage Drawers-neoforge-1.21.1-13.8.13.jar
You can use other separators:
"-" example: Storage-Drawers-neoforge-1.21.1-13.8.13.jar
"_" example: Storage_Drawers-neoforge-1.21.1-13.8.13.jar
"." example: Storage.Drawers-neoforge-1.21.1-13.8.13.jar
Using spaces causes some difficulties when working with files in different environments.
For example: I use CMD to update my client for playing with friends. DOS commands cannot work correctly with spaces.
Mod file names very rarely contain spaces, and CMD commands and BAT files are very easy to use for updating.
I have been disabled since birth, I hope for understanding, thank you.

Starting with 1.21.1-13.9.2, the space should no longer appear in the filename