Compiling a firmware for PIC mcu with ccs syntax and ccs compiler

Have a firmware and I can’t seem to make changes or compil it it needs to be done with CCS apparently or MP lab needing the CCS compiler linked to it……… looking for some help to see if it a firmware issue or a mplab issue ? Also want to make some changes to the firmware.

Mcu is PIC16F18875

Would like someone to load my firmware and just see if they get any errors when compiling