Crash: 'Ticking memory connection' java.lang.NullPointerException: Ticking memory connection

1.13

Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at ij.a(SourceFile:64)
	at cep.d(SourceFile:103)
	at cep.a(SourceFile:113)
	at aoc.O(SourceFile:2014)
	at aeo.bX(SourceFile:2567)
	at bv.a(SourceFile:250)
	at vo.b(SourceFile:727)
	at vo.f(SourceFile:515)
	at vo.a(SourceFile:150)
	at ud.b(SourceFile:113)
	at ud.Y_(SourceFile:65)
	at hw.a(SourceFile:238)
	at ua.c(SourceFile:171)
	at net.minecraft.server.MinecraftServer.w(SourceFile:749)
	at net.minecraft.server.MinecraftServer.v(SourceFile:656)
	at dfx.v(SourceFile:157)
	at net.minecraft.server.MinecraftServer.run(SourceFile:559)
	at java.lang.Thread.run(Thread.java:745)

17w14a

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 4/5/17 9:15 PM
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at mr.f(SourceFile:123)
	at mr.<init>(SourceFile:55)
	at om.h(SourceFile:910)
	at nr.<init>(SourceFile:168)
	at om.g(SourceFile:425)
	at od.b(SourceFile:120)
	at od.G_(SourceFile:66)
	at gd.a(SourceFile:231)
	at oa.c(SourceFile:187)
	at net.minecraft.server.MinecraftServer.D(SourceFile:652)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cfk.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
	at mr.f(SourceFile:123)
	at mr.<init>(SourceFile:55)
	at om.h(SourceFile:910)
	at nr.<init>(SourceFile:168)
	at om.g(SourceFile:425)
	at od.b(SourceFile:120)
	at od.G_(SourceFile:66)
	at gd.a(SourceFile:231)

-- Ticking connection --
Details:
	Connection: gd@69b76f11
Stacktrace:
	at oa.c(SourceFile:187)
	at net.minecraft.server.MinecraftServer.D(SourceFile:652)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cfk.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 17w14a
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.8.0_121, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 98894008 bytes (94 MB) / 229027840 bytes (218 MB) up to 2134114304 bytes (2035 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

1.8

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 9/09/14 17:35
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
	at bmv.a(SourceFile:40)
	at bmm.a(SourceFile:93)
	at bgv.a(SourceFile:433)
	at qs.a(SourceFile:174)
	at bfh.a(SourceFile:870)
	at qs.c(SourceFile:104)
	at qr.<init>(SourceFile:39)
	at qq.a(SourceFile:231)
	at qq.a(SourceFile:263)
	at sn.a(SourceFile:225)
	at sn.c(SourceFile:277)
	at sn.a(SourceFile:132)
	at rq.b(SourceFile:96)
	at rq.c(SourceFile:54)
	at gr.a(SourceFile:187)
	at rc.c(SourceFile:151)
	at net.minecraft.server.MinecraftServer.z(SourceFile:625)
	at net.minecraft.server.MinecraftServer.y(SourceFile:531)
	at cyk.y(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:447)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at bmv.a(SourceFile:40)
	at bmm.a(SourceFile:93)
	at bgv.a(SourceFile:433)
	at qs.a(SourceFile:174)
	at bfh.a(SourceFile:870)
	at qs.c(SourceFile:104)
	at qr.<init>(SourceFile:39)
	at qq.a(SourceFile:231)
	at qq.a(SourceFile:263)
	at sn.a(SourceFile:225)
	at sn.c(SourceFile:277)
	at sn.a(SourceFile:132)
	at rq.b(SourceFile:96)
	at rq.c(SourceFile:54)
	at gr.a(SourceFile:187)

-- Ticking connection --
Details:
	Connection: gr@741946
Stacktrace:
	at rc.c(SourceFile:151)
	at net.minecraft.server.MinecraftServer.z(SourceFile:625)
	at net.minecraft.server.MinecraftServer.y(SourceFile:531)
	at cyk.y(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:447)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.8
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_55, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 184172736 bytes (175 MB) / 351367168 bytes (335 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [qw['RozgoMC'/217, l='Survial', x=517,19, y=74,44, z=2716,66]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.