fixes : A new entity was found through the relationship 'Chill\PersonBundle\Entity\AccompanyingPeriodParticipation#accompanyingPeriod'
that was not configured t o cascade persist operations for entity: Chill\PersonBundle\Entity\AccompanyingPeriod@0000000002b1d44a000000002510e4e2.
To solve this issue: Either explici tly call EntityManager#persist() on this unknown entity or configure
cascade persist this association in the mapping for example @ManyToOne(..,cascade={"persist"}). If you cannot find out which entity causes the problem
implement 'Chill\PersonBundle\Entity\AccompanyingPeriod#__toString()' to get a clue.
