Loss of power Polaris 570

I have a 2014 Polaris sportsman 570 and it had a random loss of power for a day. I had it in water but nothing above the bottom of the racks and the belt was not slipping. Even on dry land it felt gutless. I pulled the plug for the belt box and it was dry. The next day it still felt weak but now it’s fine. What Could this have been

Loss of power Polaris 570

I have a 2014 Polaris sportsman 570 and it had a random loss of power for a day. I had it in water but nothing above the bottom of the racks and the belt was not slipping. Even on dry land it felt gutless. I pulled the plug for the belt box and it was dry. The next day it still felt weak but now it’s fine. What Could this have been