Mcreator 2024.3 gives me an error when i trying to start client

I using Nerdy's Geckolib and MCreator 2024.3 NeoForge 1.21.1

I created animated block without other mod elements and when i trying to start client Mcreator gives that error: 

"One or more of your main mod files did not complete properly.

This is usually caused by inconsistencies in the mod code during builds.
MCreator may be able to solve thi for you by regenerating entire mod's code.

If you have locked mod elements or mode base files, they can cause this error too.

Click Regenerate code button to proceed with this action"

Regenerate code doesnt help, i don't know what i need to do.