First Problem

So after riding all day and on way back home my machine heats up real fast and overheat light comes on and then turns machine off. I checked coolant overflow and it was empty so I added some water since i was on trail and headed back home. I looked once home and it is leaking behind waterpump and block maybe there’s a bad seal back there i dunno. I hope it heating up to 258 or so i didnt do any damage. My dealer said they have no parts for this bike in stock since its so new which sucks cause I have a ride this weekend but now cant go but at least its under warranty.