C++ 4.19 Transition Guide

I am having some mac-only issues compiling third party plugin on 4.19:

error CS0103: The name ‘PublicDefinitions’ does not exist in the current context

from 4.19 release notes : New: The Module Rules “Definitions” property has been renamed to “Public Definitions”, to make its semantics clearer. A complementary “Private Definitions” property has also been added.

Are there issues using PublicDefintions on mac?

(Same code compiles on windows)

[UPDATE]
[DOH]
Self-inflicted. Forgot to resolve .uproject. Works on mac. Please disregard
[/DOH]
[/UPDATE]