If you put a block of water on a server. Crashes Minecraft

Crash:

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

Time: 25.02.18 12:16
Description: Tesselating block in world

java.lang.NullPointerException: Tesselating block in world
at vo$a.a(SourceFile:77)
at vo$a.a(SourceFile:63)
at aye.a(SourceFile:210)
at bgg.a(SourceFile:263)
at clz.a(SourceFile:85)
at cly.a(SourceFile:65)
at coc.b(SourceFile:180)
at cny.a(SourceFile:100)
at cny.run(SourceFile:43)
at java.lang.Thread.run(Thread.java:745)

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

– Head –
Thread: Client thread
Stacktrace:
at vo$a.a(SourceFile:77)
at vo$a.a(SourceFile:63)
at aye.a(SourceFile:210)
at bgg.a(SourceFile:263)
at clz.a(SourceFile:85)

– Block being tesselated –
Details:
Block: minecraft:water[level=0]
Block location: World: (16,62,44), Chunk: (at 0,3,12 in 1,2; contains blocks 16,0,32 to 31,255,47), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
at cly.a(SourceFile:65)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [ckr['Lex305'/1499, l='MpServer', x=28,50, y=64,00, z=12,50]]
Chunk stats: MultiplayerChunkCache: 441, 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (28,64,12), Chunk: (at 12,4,12 in 1,0; contains blocks 16,0,0 to 31,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 1935 game time, 1935 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: adventure (ID 2). Hardcore: false. Cheats: false
Forced entities: 85 total; [ckr['Lex305'/1499, l='MpServer', x=28,50, y=64,00, z=12,50], ajy['Zombie'/1795, l='MpServer', x=-46,50, y=61,00, z=-24,50], aiw['Creeper'/1673, l='MpServer', x=92,50, y=22,00, z=28,50], aiw['Creeper'/1674, l='MpServer', x=94,50, y=22,00, z=27,50], afw['Huhn'/275, l='MpServer', x=59,50, y=64,00, z=29,50], agi['Schaf'/276, l='MpServer', x=60,50, y=64,00, z=30,50], agi['Schaf'/277, l='MpServer', x=62,50, y=64,00, z=27,50], agi['Schaf'/150, l='MpServer', x=-42,19, y=69,00, z=-3,26], agi['Schaf'/278, l='MpServer', x=63,25, y=64,00, z=19,80], agi['Schaf'/151, l='MpServer', x=-33,50, y=68,00, z=-1,50], agi['Schaf'/279, l='MpServer', x=61,50, y=64,00, z=28,50], agi['Schaf'/152, l='MpServer', x=-29,77, y=67,00, z=4,45], afw['Huhn'/280, l='MpServer', x=58,50, y=64,00, z=33,50], agi['Schaf'/153, l='MpServer', x=-34,50, y=68,00, z=0,50], aiw['Creeper'/1433, l='MpServer', x=-2,50, y=37,00, z=41,50], afw['Huhn'/281, l='MpServer', x=61,50, y=64,00, z=39,50], agd['Schwein'/282, l='MpServer', x=61,49, y=69,00, z=76,25], aiy['Enderman'/1690, l='MpServer', x=-44,50, y=32,00, z=37,50], agd['Schwein'/283, l='MpServer', x=62,50, y=64,00, z=69,50], ajs['Spinne'/1948, l='MpServer', x=11,50, y=35,00, z=91,50], afr['Fledermaus'/1053, l='MpServer', x=84,12, y=30,28, z=-58,08], ajp['Skelett'/1949, l='MpServer', x=12,50, y=35,00, z=90,50], ajp['Skelett'/1950, l='MpServer', x=10,50, y=35,00, z=90,50], ajp['Skelett'/1951, l='MpServer', x=9,50, y=35,00, z=91,50], ajp['Skelett'/1696, l='MpServer', x=6,02, y=38,00, z=84,50], ajp['Skelett'/1697, l='MpServer', x=5,45, y=39,00, z=82,75], ajp['Skelett'/1954, l='MpServer', x=28,50, y=46,00, z=-17,50], aiw['Creeper'/2213, l='MpServer', x=15,50, y=17,00, z=54,50], aiw['Creeper'/2214, l='MpServer', x=14,50, y=17,00, z=56,50], aiw['Creeper'/679, l='MpServer', x=2,50, y=11,00, z=57,50], ajy['Zombie'/680, l='MpServer', x=3,50, y=11,00, z=57,50], ajy['Zombie'/681, l='MpServer', x=49,50, y=17,00, z=-39,50], afr['Fledermaus'/1066, l='MpServer', x=-35,25, y=30,90, z=24,85], aiw['Creeper'/1842, l='MpServer', x=103,51, y=37,00, z=88,51], agg['Kaninchen'/312, l='MpServer', x=89,50, y=70,00, z=-37,50], agg['Kaninchen'/313, l='MpServer', x=89,50, y=70,00, z=-37,50], agg['Kaninchen'/314, l='MpServer', x=86,90, y=69,00, z=-28,53], afw['Huhn'/187, l='MpServer', x=-2,81, y=65,00, z=-6,34], agg['Kaninchen'/188, l='MpServer', x=-18,03, y=64,00, z=-63,21], agg['Kaninchen'/189, l='MpServer', x=-23,33, y=68,00, z=-47,52], ajy['Zombie'/1982, l='MpServer', x=27,50, y=35,00, z=89,50], ajy['Zombie'/703, l='MpServer', x=58,50, y=15,00, z=-26,50], ajs['Spinne'/1986, l='MpServer', x=102,50, y=37,00, z=90,50], ajs['Spinne'/1860, l='MpServer', x=101,50, y=50,00, z=37,50], ajp['Skelett'/1988, l='MpServer', x=-2,50, y=28,00, z=-51,50], ajp['Skelett'/1989, l='MpServer', x=-3,50, y=28,00, z=-53,50], afw['Huhn'/198, l='MpServer', x=-7,50, y=63,00, z=37,50], aiw['Creeper'/1862, l='MpServer', x=103,50, y=50,00, z=35,50], afw['Huhn'/199, l='MpServer', x=-6,50, y=63,00, z=37,50], aiw['Creeper'/1863, l='MpServer', x=103,66, y=50,00, z=32,49], afw['Huhn'/200, l='MpServer', x=-7,50, y=64,00, z=34,50], afw['Huhn'/201, l='MpServer', x=-6,50, y=63,00, z=36,50], ajs['Spinne'/969, l='MpServer', x=6,50, y=19,00, z=-46,50], agd['Schwein'/202, l='MpServer', x=-3,50, y=70,00, z=49,50], ajz['Dorfbewohnerzombie'/972, l='MpServer', x=6,50, y=19,00, z=-46,50], ajz['Dorfbewohnerzombie'/973, l='MpServer', x=9,50, y=19,00, z=-47,50], afr['Fledermaus'/845, l='MpServer', x=73,98, y=27,04, z=-31,25], ajs['Spinne'/1361, l='MpServer', x=68,50, y=50,00, z=50,50], ajp['Skelett'/1873, l='MpServer', x=9,50, y=36,00, z=58,50], agd['Schwein'/210, l='MpServer', x=3,40, y=64,00, z=2,25], agd['Schwein'/211, l='MpServer', x=3,70, y=64,00, z=4,43], agd['Schwein'/212, l='MpServer', x=5,42, y=64,00, z=12,31], agd['Schwein'/213, l='MpServer', x=0,50, y=64,00, z=2,50], afw['Huhn'/214, l='MpServer', x=4,50, y=64,00, z=3,50], afr['Fledermaus'/1239, l='MpServer', x=-38,34, y=58,01, z=-15,35], afw['Huhn'/215, l='MpServer', x=-5,21, y=64,00, z=5,60], afr['Fledermaus'/1240, l='MpServer', x=-30,81, y=59,04, z=-19,19], agg['Kaninchen'/344, l='MpServer', x=106,50, y=64,00, z=36,50], ajy['Zombie'/857, l='MpServer', x=49,50, y=24,00, z=-7,50], agg['Kaninchen'/345, l='MpServer', x=108,50, y=64,00, z=35,50], ajy['Zombie'/858, l='MpServer', x=48,50, y=24,00, z=-9,50], agg['Kaninchen'/346, l='MpServer', x=107,50, y=64,00, z=35,50], ajy['Zombie'/859, l='MpServer', x=47,50, y=24,00, z=-6,50], agg['Kaninchen'/347, l='MpServer', x=107,71, y=64,00, z=23,02], aiw['Creeper'/860, l='MpServer', x=53,50, y=24,00, z=-6,50], agg['Kaninchen'/353, l='MpServer', x=100,58, y=64,00, z=78,28], agg['Kaninchen'/354, l='MpServer', x=102,93, y=64,00, z=67,07], aiw['Creeper'/1385, l='MpServer', x=57,50, y=16,00, z=-43,50], agg['Kaninchen'/234, l='MpServer', x=16,50, y=64,00, z=-53,50], ajz['Dorfbewohnerzombie'/1386, l='MpServer', x=52,77, y=16,00, z=-44,47], agg['Kaninchen'/235, l='MpServer', x=19,50, y=64,00, z=-53,50], ajp['Skelett'/1387, l='MpServer', x=22,50, y=15,00, z=49,50], ajp['Skelett'/1388, l='MpServer', x=21,50, y=15,00, z=48,50], afr['Fledermaus'/1020, l='MpServer', x=23,43, y=34,01, z=58,35], afr['Fledermaus'/1276, l='MpServer', x=47,46, y=27,53, z=1,92]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Non-integrated multiplayer server
Stacktrace:
at cio.a(SourceFile:368)
at bya.b(SourceFile:1827)
at cny.run(SourceFile:49)
at java.lang.Thread.run(Thread.java:745)

– System Details –
Details:
Minecraft Version: 18w08b
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 3103624072 bytes (2959 MB) / 3865509888 bytes (3686 MB) up to 3865509888 bytes (3686 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn4G
Launched Version: 18w08b
LWJGL: 3.1.2 build 29
OpenGL: NO CONTEXT
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: vanilla, file/1.13 Musik (incompatible)
Current Language: Deutsch (Deutschland)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-4210U CPU @ 1.70GHz