Add member with an empty characters email

Date: Tue Jul 16 15:31:17 CEST 2019 (1563283877363)
Thread: ametys-async-observe-51
Message #: 3379
Level: ERROR
NDC:
Category: org.ametys.core.observation.ObservationManager
Message: Unable to dispatch event: event[id: member.added, issuer: UserIdentity [login=tberge, population=utilisateurs-locaux], args: [project = '/ametys:plugins/workspaces/projects/projet572v2' (project://7bc224ef-10fa-4431-90b6-ba04e6503506), project.member = '/ametys:plugins/workspaces/projects/projet572v2/ametys-internal:members/member-3' (project-member://2a56b662-7030-47aa-bcb6-479fc9f1a7c5), project.member.id = project-member://2a56b662-7030-47aa-bcb6-479fc9f1a7c5, projectName = projet572v2, projectId = project://7bc224ef-10fa-4431-90b6-ba04e6503506, projectTitle = projet572v2]] to asynchronous observers
Location: org.apache.cocoon.util.log.SLF4JLoggerAdapter.error(SLF4JLoggerAdapter.java:46)
Thrown:
java.lang.NullPointerException
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1265)
at org.ametys.core.util.mail.SendMailHelper$MailSender.sendMail(SendMailHelper.java:858)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:473)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:240)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:197)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:158)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:123)
at org.ametys.core.util.mail.SendMailHelper.sendMail(SendMailHelper.java:109)
at org.ametys.plugins.workspaces.project.notification.AddMemberMailNotifierObserver.observe(AddMemberMailNotifierObserver.java:180)
at org.ametys.core.observation.ObservationManager$ParallelAsyncObserve._observe(ObservationManager.java:502)
at org.ametys.core.observation.ObservationManager$AbstractAsyncObserve.call(ObservationManager.java:448)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)