Unable to create space in webcenter spaces

Hi everybody,
When I want to create an espace, the following error is occured :

UNABLE_TO_MAKE_GS_PUBLIC. You may want to delete the current space if it is visible in your lists. Contact the administrator if the problem persists.
    at oracle.webcenter.spaces.internal.model.SpacesManagerImpl.createGroupSpaceInternal(SpacesManagerImpl.java:1689)
    at oracle.webcenter.spaces.internal.model.SpacesManagerImpl.access$200(SpacesManagerImpl.java:225)
    at oracle.webcenter.spaces.internal.model.SpacesManagerImpl$1.run(SpacesManagerImpl.java:553)
    at java.security.AccessController.doPrivileged(Native Method)
    at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:259)
    at oracle.security.jps.internal.jaas.AccActionExecutor.execute(AccActionExecutor.java:65)
    at oracle.security.jps.internal.jaas.CascadeActionExecutor$SubjectPrivilegedAction.run(CascadeActionExecutor.java:68)