Me (gowild18) and My friend (Yamahawk99) we crashed over and over and over again fix this plz

Me and my friend were crashing on a server (pussycraft.net is the server IP) and we crashed 2 times in 5-10 minutes and we dont know why and it has never ever done this to us before only on single player worlds for me me (gowild18) and My friend (Yamahawk99) would like 2 know what is going on