Game crash for entering a battle with no unfainted pokemon

[Yahen 108]

Soooooo

I wuz like oh geez thats an egg

Then 2 haxorus tried to bully me and i won with 1 poke left

Then i waz like oo what might happen if i send my only healthy mon to the pc to open space for this beautiful egg of natural dinosaurs

So i stepped foward, got a wild encounter and the game crashed

Thats it i guess bye