JavaRuntime Error when a new process instance is created

Hello,

when I try to start a new process instance, I receive the following error message.

I have deployed a maven project on the engine and all service tasks are implemented by javadelegate code, while I am using java11 for some libraries.

I guess java 11, creates my issue because if I use java 8 everything works.
How can I enable java11 and fix the javaruntime error?

Thank you in advance.

Can you upload your process