I tryed the latest snaphot and tryed to convert my mod from 1.12 to 1.14 but when I tryed to run the mod I encountered error in mod elements. I had to delete 50 of them before minecraft started. Now forge just loaded everything but minecraft menu havent loaded and mcreator is frozen. Then minecraft closed. So I dont know what to do.
workspace: https://drive.google.com/open?id=1mSQptwYTU02t9hNEXMIJ-0zhkCBBwyvT
Issue comments
Invalid sounds.json in resourcepack: 'Mod Resources'
net.minecraft.util.ResourceLocationException: Non [a-z0-9/._-] character in path of location: marioandluigiblockbrothersmod:super mario bros - koopa troopa kick shell sound
Minecraft 1.14.4 does not support whitespace in file names. Make sure to rename all sounds and textures and replace whitespace with say underscores and then reselect these textures for all mod elements and sounds etc.
Search the crash log for "character in path of location" to see which files still need fixing.
The issue with custom models for mobs that cause build errors is that you are using a modeler that does not support 1.14.4. Setting texture offset is no longer possible with 1.14.4 Java models and some other things are not supported too.
Can I get the contents of the console tab when this happens? If it freezes completely, try to get logs from <workspace folder>/run folder.