I'm trying to run MrCrayfish's Gun Mod in 1.19.4 (latest available version), so have created a new installation with the same version of Forge/Minecraft. I put the mod in the mod folder as well as the appropriate Framework mod, but they just don't load. I can play that version of Minecraft but the mods don't appear. I can run mods for the latest version (1.20.4) just fine. I've tried playing it from the 1.19.4 version folder too but it doesn't work. It doesn't crash, it just doesn't load the mods. I've also tried alternative older versions of the mods/Forge. Can anyone tell me what I might have done wrong here? I've followed lots of YouTube videos on how to do this, re-downloaded the mods and everything else I can think of... I'm using a MacBook Pro, Java edition.
Link to launcher log: https://pastebin.com/0Lf0Teqk