Hi all... First time posting, but would truly appreciate any insight. I have a ariens 936053 ridding lawn mower ( Briggs & Stratton 22 v-twin 46" fender hydro). A couple nights ago, after mowing about 20 minutes the Pto/mower deck turned off (disengaged). Toggling the switch did nothing. The tractor continued to run fine, but I drove it over to the pole barn and turns it off to take a look. When attempting to start it back up (within 15 minutes), absolutely nothing happened. No clicks, turning over, etc. I've checked a few of the safety switches but all seem ( at first blush) to be ok. Any thoughts/suggestions on what to check/review from here?

Thanks for helping me out!!