weird bug when i try making a second animated mob

So, with just my first mob the mod works fine. However, with my second mob, it crashes before i can even go into the actual minecraft game. I even tried duplicating the first mob and changing things about it, thinking nothing bad would happen but the same error happens. Any idea how i can fix this?

This is the error in the console:

> Task :runClient FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':runClient'.
> Process 'command 'C:\Program Files\Pylo\MCreator\jdk\bin\java.exe'' finished with non-zero exit value -1
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 18s
10 actionable tasks: 3 executed, 7 up-to-date