PSE not working now after installing Mojave

Hi! I am online instructor for Digital Scrapper and I teach students how to use PSCC and PSE to create digital scrapbook pages. Because of that, I have to have the last four versions of PSE on my computer.

Yesterday I made the giant mistake of installing Mojave on my laptop. Once it finished installing, I tried to open PSE 2019 and I received an error message:

To be clear, the PSE 2019 welcome hub/screen opens but the second I click on the Editor option, I get the above message.

The crazy thing is that I get this error message for ALL FOUR versions of PSE.

So, I uninstalled them.

And then I spent all afternoon downloading PSE 2019 again and after it finished installing, I got the exact same error message.

I had zero issues before Mojave. Why is this happening now? Am I missing a key file on my hard drive in order for PSE to work w/ Mojave? None of my students are having this exact issue either. I need help and I think it's total crap that Adobe doesn't have the chat or phone option available for PSE troubleshooting.

So, if any one of you has a clue as to what I can try to get this fixed - I would be forever grateful.

PS - I did try doing the Accessibility workaround that's online and that didn't work.

Thanks for any help you can give!