Headless Wifi USB Drive

Im trying to get my new bpi zero to work like a wireless USB drive for my resin 3d printer, I can do this with my rpi zero without issues but when i try the same thing on pbi i get an error (modprobe: FATAL: Module g_multi not found in directory /lib/modules/4.4.55-BPI-M2Z-Kernel)

can anyone help me set this up? I am a bit of a noob so have been using a step by step guide for rpi and just making changes needed for the bpi but now I’m stuck on step 6. I was using this guide: