Creating a multiplayer world with the seed '1.13'. World generates fine, but any player attempting to connect gets disconnected with the error: java.lang.NullPointerException: Tesselating block in world

^^That's in the client. In the console it looks like this

[12:19:48] [Server thread/INFO]: YT_Veritas0923 lost connection: Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host
–
---- Minecraft Crash Report ----
// Why did you do that?

Time: 2/22/18 12:35 PM
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 cnx.b(SourceFile:141)
at clk.a(SourceFile:923)
at cle.b(SourceFile:1161)
at cle.a(SourceFile:1096)
at cle.a(SourceFile:957)
at bya.b(SourceFile:820)
at bya.a(SourceFile:381)
at net.minecraft.client.main.Main.main(SourceFile:141)

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: (192,54,11), Chunk: (at 0,3,11 in 12,0; contains blocks 192,0,0 to 207,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
at cly.a(SourceFile:65)
at coc.b(SourceFile:180)
at cny.a(SourceFile:100)
at cnx.b(SourceFile:141)
at clk.a(SourceFile:923)
at cle.b(SourceFile:1161)
at cle.a(SourceFile:1096)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [ckr['YT_Veritas0923'/1546, l='MpServer', x=195.50, y=67.00, z=-14.04]]
Chunk stats: MultiplayerChunkCache: 289, 289
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (192,64,-12), Chunk: (at 0,4,4 in 12,-1; contains blocks 192,0,-16 to 207,255,-1), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Level time: 24025 game time, 24025 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 65 total; [ckr['YT_Veritas0923'/1546, l='MpServer', x=195.50, y=67.00, z=-14.04], agl['Squid'/1288, l='MpServer', x=233.61, y=60.87, z=-8.18], ajp['Skeleton'/524, l='MpServer', x=240.50, y=15.00, z=-33.50], agl['Squid'/1421, l='MpServer', x=218.60, y=60.00, z=38.97], afr['Bat'/534, l='MpServer', x=197.28, y=44.19, z=-67.25], afr['Bat'/536, l='MpServer', x=176.97, y=40.04, z=-65.86], ajp['Skeleton'/1432, l='MpServer', x=176.95, y=67.00, z=-50.50], afr['Bat'/537, l='MpServer', x=164.41, y=42.10, z=-45.25], afy['Cow'/282, l='MpServer', x=263.63, y=65.00, z=-8.83], afy['Cow'/283, l='MpServer', x=267.45, y=64.00, z=-6.81], agl['Squid'/544, l='MpServer', x=236.38, y=59.09, z=9.33], agi['Sheep'/162, l='MpServer', x=119.50, y=64.00, z=40.50], agi['Sheep'/163, l='MpServer', x=117.50, y=64.00, z=43.50], agi['Sheep'/164, l='MpServer', x=118.50, y=64.00, z=43.50], ajy['Zombie'/1572, l='MpServer', x=225.50, y=42.00, z=6.50], agi['Sheep'/165, l='MpServer', x=119.50, y=64.00, z=45.50], agi['Sheep'/166, l='MpServer', x=119.50, y=64.00, z=52.50], agi['Sheep'/167, l='MpServer', x=115.50, y=64.00, z=52.50], agi['Sheep'/168, l='MpServer', x=116.50, y=64.00, z=48.50], ajy['Zombie'/936, l='MpServer', x=137.50, y=45.00, z=-28.50], aiw['Creeper'/809, l='MpServer', x=179.50, y=40.00, z=-53.50], agi['Sheep'/175, l='MpServer', x=126.77, y=64.00, z=65.52], ajy['Zombie'/1074, l='MpServer', x=122.89, y=52.00, z=-69.50], aiw['Creeper'/1458, l='MpServer', x=271.50, y=50.00, z=-56.50], ajy['Zombie'/1075, l='MpServer', x=122.27, y=52.00, z=-69.50], ajp['Skeleton'/1459, l='MpServer', x=271.50, y=55.00, z=-47.50], afr['Bat'/564, l='MpServer', x=178.13, y=42.35, z=-54.66], ajp['Skeleton'/1460, l='MpServer', x=273.50, y=55.00, z=-46.50], ajy['Zombie'/568, l='MpServer', x=257.50, y=39.00, z=-17.50], aiw['Creeper'/1465, l='MpServer', x=265.50, y=70.00, z=-75.50], ajy['Zombie'/956, l='MpServer', x=253.30, y=40.00, z=-12.50], ajy['Zombie'/957, l='MpServer', x=251.50, y=39.00, z=-13.50], ajf['Husk'/1471, l='MpServer', x=181.50, y=70.00, z=-91.50], ajy['Zombie'/1089, l='MpServer', x=122.50, y=24.00, z=24.50], agd['Pig'/197, l='MpServer', x=163.46, y=66.00, z=-23.25], agd['Pig'/198, l='MpServer', x=161.50, y=67.00, z=-31.50], agd['Pig'/199, l='MpServer', x=155.74, y=67.00, z=-35.46], agd['Pig'/200, l='MpServer', x=160.50, y=67.00, z=-32.50], ajp['Skeleton'/713, l='MpServer', x=147.30, y=18.00, z=33.70], afw['Chicken'/201, l='MpServer', x=168.50, y=69.00, z=-59.50], ajy['Zombie'/1354, l='MpServer', x=149.50, y=17.00, z=25.50], afw['Chicken'/202, l='MpServer', x=170.50, y=70.00, z=-60.50], agi['Sheep'/203, l='MpServer', x=160.57, y=70.00, z=-70.72], agi['Sheep'/204, l='MpServer', x=162.51, y=67.00, z=-83.45], agi['Sheep'/205, l='MpServer', x=165.50, y=69.00, z=-84.50], agi['Sheep'/206, l='MpServer', x=165.50, y=69.00, z=-80.50], aiw['Creeper'/595, l='MpServer', x=134.50, y=52.00, z=-81.50], ajw['Witch'/852, l='MpServer', x=236.50, y=42.00, z=-18.50], afr['Bat'/1237, l='MpServer', x=138.44, y=54.93, z=-78.46], agi['Sheep'/213, l='MpServer', x=187.50, y=63.00, z=22.50], agi['Sheep'/214, l='MpServer', x=188.53, y=64.00, z=18.09], aiw['Creeper'/982, l='MpServer', x=246.50, y=26.00, z=-21.50], agi['Sheep'/215, l='MpServer', x=188.15, y=64.00, z=19.09], agi['Sheep'/216, l='MpServer', x=193.22, y=63.00, z=18.45], afr['Bat'/1244, l='MpServer', x=176.75, y=46.10, z=-49.48], ajp['Skeleton'/609, l='MpServer', x=125.73, y=41.00, z=41.48], afw['Chicken'/225, l='MpServer', x=194.50, y=65.00, z=-63.50], ajs['Spider'/868, l='MpServer', x=174.50, y=23.00, z=54.50], ajs['Spider'/871, l='MpServer', x=197.49, y=45.00, z=-59.00], afr['Bat'/746, l='MpServer', x=162.54, y=49.10, z=-2.25], ajy['Zombie'/1262, l='MpServer', x=240.24, y=59.00, z=-35.50], ajy['Zombie'/1263, l='MpServer', x=234.50, y=59.00, z=-39.50], ajy['Zombie'/1264, l='MpServer', x=234.50, y=59.00, z=-35.29], ajp['Skeleton'/1265, l='MpServer', x=234.48, y=59.00, z=-35.97], aiw['Creeper'/1014, l='MpServer', x=150.50, y=46.00, z=-2.50]]
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 bya.a(SourceFile:389)
at net.minecraft.client.main.Main.main(SourceFile:141)

– System Details –
Details:
Minecraft Version: 18w08b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 380825096 bytes (363 MB) / 536870912 bytes (512 MB) up to 1073741824 bytes (1024 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
Launched Version: 18w08b
LWJGL: 3.1.2 build 29
OpenGL: AMD Radeon R9 200 Series GL version 4.5.13506 Compatibility Profile Context 23.20.15002.11, ATI Technologies Inc.
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:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x AMD Athlon(tm) X4 760K Quad Core Processor