firstly, take the debug file out...send it to support for review.
I see from logs that controller is kind recovering from crash every one hour...
Can you please for testing remove the controller from network and see if the crashes/failures stop because sometimes something (malformed packet) coming from the network or AP or user fails it...
if it is really network triggered then you should be able to figure it out in an hour or so...
if it continues, just hard reset the controller, start from scratch...keep the backup file handy BUT i would recommend not to use it in your case...as you may got wrong configuration which is causing this issue...