Solution to get a working Mac version.
After much research, it looks like the problem is that many/all RPGM macOs exports are using old nwjs files.
I used a progam call RPG Maker Launcher which you can install from GitHub here:
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This isn't flawless. The version of Celina's calling that I made runs fine in the foreground, but will crash sometimes if it is put in the background.
It looks like there is a different approach to fixing the nwjs files here:
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Hope this helps
