Server Crash

-- Entity being ticked --
Details:
	Entity Type: Skeleton (afv)
	Entity ID: 292687
	Entity Name: Skeleton
	Entity's Exact location: -9.00, 34.00, -32.00
	Entity's Block location: -9.00,34.00,-32.00 - World: (-9,34,-32), Chunk: (at 7,2,0 in -1,-2; contains blocks -16,0,-32 to -1,255,-17), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: -0.06, -0.08, 0.04
	Entity's Rider: ~~ERROR~~ NullPointerException: null
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null