bonita-server dependency

Hello,
I'm trying to use bonita-server dependency in external maven project (event handler).
I'm switching to Bonita 2022 (before I was using 2021).
The bonita-server dependency that I was using before has version 7.13.0 and it was working normally.
Now it's 7.15.0, but it's not working.
When I put the dependency in pom.xml, I got this error:

Could not find artifact net.sf.ehcache:ehcache:pom:2.10.10.3.24 in central (https://repo.maven.apache.org/maven2)

This is the dependency:
groupId: org.bonitasoft.engine
artifactId: bonita-server
version: 7.15.0
scope: runtime

Maven Link for the dependency: https://mvnrepository.com/artifact/org.bonitasoft.engine/bonita-server/7.15.0

Many thanks in advance.