Server Crash Repeatedly

Server crashes repeatedly upon login for myself, issue seems to go away for awhile if I force myself back to my spawn point.

[01:46:36] [Server thread/ERROR]: Couldn't load chunk
java.lang.NullPointerException: null
	at bzp.a(SourceFile:137) ~[minecraft-snapshot-18w22c.jar:?]
	at bzp.a(SourceFile:80) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.b(SourceFile:103) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.a(SourceFile:83) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.a(SourceFile:119) ~[minecraft-snapshot-18w22c.jar:?]
	at sl.g(SourceFile:92) [minecraft-snapshot-18w22c.jar:?]
	at sl.b(SourceFile:114) [minecraft-snapshot-18w22c.jar:?]
	at st.<init>(SourceFile:39) [minecraft-snapshot-18w22c.jar:?]
	at su.c(SourceFile:192) [minecraft-snapshot-18w22c.jar:?]
	at su.a(SourceFile:223) [minecraft-snapshot-18w22c.jar:?]
	at uy.a(SourceFile:274) [minecraft-snapshot-18w22c.jar:?]
	at uy.c(SourceFile:343) [minecraft-snapshot-18w22c.jar:?]
	at uy.a(SourceFile:167) [minecraft-snapshot-18w22c.jar:?]
	at tn.b(SourceFile:118) [minecraft-snapshot-18w22c.jar:?]
	at tn.Y_(SourceFile:65) [minecraft-snapshot-18w22c.jar:?]
	at hu.a(SourceFile:221) [minecraft-snapshot-18w22c.jar:?]
	at tk.c(SourceFile:175) [minecraft-snapshot-18w22c.jar:?]
	at net.minecraft.server.MinecraftServer.w(SourceFile:719) [minecraft-snapshot-18w22c.jar:?]
	at rx.w(SourceFile:365) [minecraft-snapshot-18w22c.jar:?]
	at net.minecraft.server.MinecraftServer.v(SourceFile:626) [minecraft-snapshot-18w22c.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:531) [minecraft-snapshot-18w22c.jar:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]

[01:46:37] [WorldGen-Scheduler-1/ERROR]: Couldn't load protochunk
java.lang.NullPointerException: null
	at bzp.a(SourceFile:137) ~[minecraft-snapshot-18w22c.jar:?]
	at bzp.a(SourceFile:80) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.b(SourceFile:103) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.a(SourceFile:83) ~[minecraft-snapshot-18w22c.jar:?]
	at bqv.b(SourceFile:135) ~[minecraft-snapshot-18w22c.jar:?]
	at tg.a(SourceFile:70) ~[minecraft-snapshot-18w22c.jar:?]
	at tg.a(SourceFile:51) ~[minecraft-snapshot-18w22c.jar:?]
	at java.util.Map.computeIfAbsent(Map.java:957) ~[?:1.8.0_131]
	at tg.a(SourceFile:50) ~[minecraft-snapshot-18w22c.jar:?]
	at tg.a(SourceFile:25) ~[minecraft-snapshot-18w22c.jar:?]
	at agi.a(SourceFile:60) ~[minecraft-snapshot-18w22c.jar:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590) [?:1.8.0_131]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_131]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_131]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]