Description of problem:

When trying to change logging level of periodic file handler via JON, it fails with:
{JBAS014653: Composite operation failed and was rolled back. Steps that failed:={Operation step-3=JBAS014746: file may not be null}}, rolled-back=true
Version-Release number of selected component (if applicable):


Version-Release number of selected component (if applicable):
EAP 6.1.0.DR4 and JON 3.1.2


How reproducible: always


Steps to Reproduce:
1. import EAP 6.1 standalone
2. create Periodic File Handler resource under logging subsystem
3. Configure this new resource (try updating logging level for example)
  
Actual results:
Configuration update fails with: {JBAS014653: Composite operation failed and was rolled back. Steps that failed:={Operation step-3=JBAS014746: file may not be null}}, rolled-back=true


Expected results:
successfully changed configuration level


Additional info:
I have no problem to change the attribute level via EAP 6.1 cli