Message : Unable to dispatch event: event[id: member.added, issuer: UserIdentity [login=cmalinowski, population=utilisateurs], args: [project.member.identity.type = USER, project = '/ametys:plugins/workspaces/projects/test' (project://188d77fe-c784-48b7-84d4-e2ec0c18b4a0), project.member = '/ametys:plugins/workspaces/projects/test/ametys-internal:members/member-4' (project-member://7809a256-28fc-4b0e-87f9-db28cd0fde95), project.member.id = project-member://7809a256-28fc-4b0e-87f9-db28cd0fde95, project.member.identity = dcartier#utilisateurs-ametys, projectId = project://188d77fe-c784-48b7-84d4-e2ec0c18b4a0]] to asynchronous observers
Emplacement : org.apache.cocoon.util.log.SLF4JLoggerAdapter.error(SLF4JLoggerAdapter.java:46)

Pile d'appels :
java.lang.NullPointerException
at java.base/java.util.Objects#requireNonNull:233
at java.base/java.util.ImmutableCollections$Map1#<init>:1111
at java.base/java.util.Map#of:1365
at org.ametys.plugins.workspaces.project.notification.WelcomeMemberMailNotifierObserver#getUserToNotifyByLanguage:66
at org.ametys.plugins.workspaces.project.notification.AbstractMemberMailNotifierObserver#observe:136
at org.ametys.core.observation.ObservationManager$ParallelAsyncObserve#_observe:512
at org.ametys.core.observation.ObservationManager$AbstractAsyncObserve#call:449
at java.base/java.util.concurrent.FutureTask#run:317
at java.base/java.util.concurrent.ThreadPoolExecutor#runWorker:1144
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker#run:642
at java.base/java.lang.Thread#run:1583