Do you have LDAP user management enabled? At the stack trace i see the background job invoked, this could be from a ldap sync which produces errors.
Can you also check the web.log, this could give some further informations.
Do you have LDAP user management enabled? At the stack trace i see the background job invoked, this could be from a ldap sync which produces errors.
Can you also check the web.log, this could give some further informations.