Hi,
I don 't know why, but the game doesn't want to load. I always the same error (in 1.12.2 and 1.1.4.4). I've already tried everything you say in this page. I deleted the caches folder, and reopen MCreator. Don't fix the problem. Deleted the gradle folder and reopen MCreator. Don't fix the problem. Deleted the gradle folder, deleted MCreator and reinstall MCreator. Don't fix the problem. (I had already this problem with the second snapshot.)
So can you help me please ? Because I have no more ideas to what I can do.
The latest.log file : https://pastebin.com/GKMJmRhZ
The console : https://pastebin.com/UiGfVGgc
Your mob Deer is set to spawn in two biomes that do not exist in your workspace anymore:
It is a bad practice to leave orphaned references like this and 1.14.4 is made to crash when this happens to make users fix these. I will try to make MCreator to fix these for the users automatically in 2019.5, but try to fix them on your own.