I can’t add this life bar in for the life of me

I’ve been trying to add this lifebar https://www.mediafire.com/file/aqgam6x8t5w1894/Default_Lifebars_MvC2_style.zip/file
And I’ve changed the system.def file in the data file, following a tutorial, but I got an error

And then I can he’s the system file in the big folder, but I got another error
This is the error:
Error message: Can't find file system.snd
Error loading system data: data/big/system.def
PLEASE HELP WHAY I AM DOIJG WROTN