There is a solution for Mac OS Catalina users. I have already mentioned in discord.
You need to have latest version of ToN and LE.
1-First find your save directory from your latest version of LE.
Copy and paste the save directory to your Desktop (place is not important. I like to view them on Desktop).
2- Copy everyting inside of LE content/resources/app.nw
3- Paste copied files to ToN content/resources/app.nw
4- Do not merge, REPLACE ALL.
Now you have a working copy of LE on Catalina.
5- Rename your save files as follows;
file1.rpgsave to DefaultLustEpidemicfile1.rpgsave
file2.rpgsave to DefaultLustEpidemicfile2.rpgsave
....
file17.rpgsave to DefaultLustEpidemicfile17.rpgsave
globalsave.rpgsave to DefaultLustEpidemicglobal.rpgsave (it could be DefaultLustEpidemicglobalsave.rpgsave. If the first one is not work try this. I don’t remember exactly. I am on phone now).
And move all of them to the directory Home/YourUserName/Library/Application Support/KADOKAWA/RPGMV/
Then everything works perfectly.