I added an new entity and now the game doesn't finnish launching

I've added a new entity from block bench to my mod and now when i try and open the game it starts launching but when it finishes minecraft just closes. we used to put new models on mcreator without issues but we changed the mod version from 1.19.4 to 1.20.1.

The solutions i have tried:

-put the version of the entity model to forge 1.17+ on block bench( my mod is in forge 1.20.1).

-just delete the ''C:\Users\kikor\.mcreator\gradle\jdks\eclipse_adoptium-17-amd64-windows\jdk-17.0.12+7\bin\java.exe'' file(the crash report will be bellow)

Crash Report:

Crash Report UUID: ed3a1a87-b49e-4ed6-9cba-6ee8f02012ff
FML: 47.3
Forge: net.minecraftforge:47.3.0
[16:55:24] [Render thread/FATAL] [ne.mi.co.ForgeMod/]: Preparing crash report with UUID 2e1401f5-252f-4bac-bc42-a860e8e81ff7
#@!@# Game crashed! Crash report saved to: #@!@# C:\Users\kikor\MCreatorWorkspaces\asds\run\.\crash-reports\crash-2024-08-04_16.55.24-client.txt
> Task :runClient FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':runClient'.
> Process 'command 'C:\Users\kikor\.mcreator\gradle\jdks\eclipse_adoptium-17-amd64-windows\jdk-17.0.12+7\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 25s
10 actionable tasks: 3 executed, 7 up-to-date

BUILD FAILED
Task completed in 25 seconds

Note: my friends tried to solve the problem on their pc's and they got a diferent error. it tells them it can't finish launching because it doesn't have a specific paste of the model for example ''head'' or ''body''.

Thank's for your time.