'Use of Undeclared identifier 'FFilehelper' error when packaging a project

Hi guys, I’m getting a ‘Use of Undeclared identifier ‘FFilehelper’’ error when packaging my project. The code in the .cpp and header files compiles successfully and the function I was trying to perform is working but I just can’t package the project. There’s also an error in the .cpp file. Images attached and any help appreciated! Cheers

CPP file

Header file

Packaging Error