TextMesh Pro TMP Error: You're saving the font asset in a directory outside of this project folder

I get this error when generating a font asset and trying to save it to a symlinked folder inside "Assets". This is on macOS, Unity 2018.4 and TMP 1.5.

"You're saving the font asset in a directory outside of this project folder. This is not supported."

I am saving to a folder inside Assets but the generator code doesn't allow for symlinks. I'm not sure how to handle this as I can't even save to a temp location and manually move it to the proper location due to material references. I have to create a separate project that mirrors the real project, generate and then move the assets and materials. Not ideal.

The error should be at most, a warning.

Thanks,
robert