Trouble Getting RS Checksum Lua Script to Run

[u/Sinncrow]

On my Windows PC, Im trying to use [the Wishmaker Jirachi RNG tool](https://www.pokemonrng.com/emulator-rs-wishmaker/). I downloaded the latest dev build for mGBA, I downloaded the proper lua script from PokeLUA (the RS checksum lua script), and I put in my save file's path into the lua script using notepad (including the \\ at the proper locations in the file's path), but every time I try to run the lua script, I get an error saying no file or directory was found.

Im at a loss for what I am doing wrong, and I have a strong suspicion that it is something super simple that Im just missing. Any advice on how to fix this?