Logging Variables for Push Notification
For troubleshooting, add following variables in the [Configuration]->[Advanced] page
 
pn.log
If true, enable the logging in Push Notification  (default: false)
pn.apn.log
If true, enable the logging in APNS service plugin  (default: false)
pn.database.log.error
If true, enable the error logging in the device database  (default: false)
