An odd error that I get when I run my mod

I keep getting this error when I try to run my mod in Mcreator. I really haven't done anything but add more elements to it, as far as I remember. But it just keeps saying that there is a "JVM native code error". If someone could help, that would be awesome. I really enjoy making my mod and this is postponing me from doing that.

https://imgur.com/a/cV6xIZN