These ticking entity bugs are preventing me from playing the game.
---- Minecraft Crash Report -------- Minecraft Crash Report ----// There are four lights!
Time: 4/10/19 2:04 PMDescription: Ticking entity
java.lang.IllegalStateException: POI data mismatch: already registered at ev{x=15, y=79, z=-721} at aqc.a(SourceFile:72) at aqc.a(SourceFile:43) at aqc$$Lambda$2616/991387318.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at aqc.<init>(SourceFile:43) at aqa$$Lambda$2441/1545652255.apply(Unknown Source) at bxt.a(SourceFile:123) at bxt$$Lambda$2609/819421306.apply(Unknown Source) at java.util.Optional.map(Optional.java:215) at bxt.a(SourceFile:122) at bxt.a(SourceFile:102) at bxt.d(SourceFile:76) at aqa.a(SourceFile:69) at aqa.a(SourceFile:65) at aqa$$Lambda$3013/1042295894.apply(Unknown Source) at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267) at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250) at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110) at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) at bgn$1.tryAdvance(SourceFile:164) at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126) at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:529) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:516) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464) at aqa.b(SourceFile:85) at apj.b(SourceFile:49) at apj.a(SourceFile:34) at apj.a(SourceFile:19) at apo.b(SourceFile:31) at ajb.a(SourceFile:249) at ajb$$Lambda$3000/1117073723.accept(Unknown Source) at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:600) at ajb.c(SourceFile:249) at ajb.a(SourceFile:221) at ave.K(SourceFile:255) at ain.cZ(SourceFile:623) at aim.k(SourceFile:2257) at ain.k(SourceFile:479) at aib.k(SourceFile:140) at aim.h(SourceFile:2102) at ain.h(SourceFile:293) at ave.h(SourceFile:293) at vf.a(SourceFile:581) at vf$$Lambda$2692/519590723.accept(Unknown Source) at bha.a(SourceFile:669) at vf.a(SourceFile:384) at net.minecraft.server.MinecraftServer.b(SourceFile:817) at net.minecraft.server.MinecraftServer.a(SourceFile:754) at dwy.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:629) 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: Server threadStacktrace: at aqc.a(SourceFile:72) at aqc.a(SourceFile:43) at aqc$$Lambda$2616/991387318.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at aqc.<init>(SourceFile:43) at aqa$$Lambda$2441/1545652255.apply(Unknown Source) at bxt.a(SourceFile:123) at bxt$$Lambda$2609/819421306.apply(Unknown Source) at java.util.Optional.map(Optional.java:215) at bxt.a(SourceFile:122) at bxt.a(SourceFile:102) at bxt.d(SourceFile:76) at aqa.a(SourceFile:69) at aqa.a(SourceFile:65) at aqa$$Lambda$3013/1042295894.apply(Unknown Source) at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267) at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250) at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110) at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) at bgn$1.tryAdvance(SourceFile:164) at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126) at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:529) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:516) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464) at aqa.b(SourceFile:85) at apj.b(SourceFile:49) at apj.a(SourceFile:34) at apj.a(SourceFile:19) at apo.b(SourceFile:31) at ajb.a(SourceFile:249) at ajb$$Lambda$3000/1117073723.accept(Unknown Source) at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:600) at ajb.c(SourceFile:249) at ajb.a(SourceFile:221) at ave.K(SourceFile:255) at ain.cZ(SourceFile:623) at aim.k(SourceFile:2257) at ain.k(SourceFile:479) at aib.k(SourceFile:140) at aim.h(SourceFile:2102) at ain.h(SourceFile:293) at ave.h(SourceFile:293) at vf.a(SourceFile:581) at vf$$Lambda$2692/519590723.accept(Unknown Source)
– Entity being ticked --Details: Entity Type: minecraft:villager (ave) Entity ID: 439 Entity Name: Villager Entity's Exact location: -3.73, 66.00, -725.42 Entity's Block location: World: (-4,66,-726), Chunk: (at 12,4,10 in -1,-46; contains blocks -16,0,-736 to -1,255,-721), Region: (-1,-2; contains chunks -32,-64 to -1,-33, blocks -512,0,-1024 to -1,255,-513) Entity's Momentum: -0.18, -0.08, 0.23 Entity's Passengers: [] Entity's Vehicle: ~_ERROR~ NullPointerException: nullStacktrace: at bha.a(SourceFile:669) at vf.a(SourceFile:384)
– Affected level --Details: Level name: Mellacon All players: 1 total; [vg['GreenPlanet669'/257, l='Mellacon', x=37.58, y=99.39, z=-672.59]] Chunk stats: ServerChunkCache: 2918 Level seed: -2468415208741546110 Level generator: ID 00 - default, ver 1. Features enabled: true Level generator options: {} Level spawn location: World: (240,96,-240), Chunk: (at 0,6,0 in 15,-15; contains blocks 240,0,-240 to 255,255,-225), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1) Level time: 11518004 game time, 1000 day time Level dimension: 0 Level storage version: 0x04ABD - Anvil Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false) Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: trueStacktrace: at net.minecraft.server.MinecraftServer.b(SourceFile:817) at net.minecraft.server.MinecraftServer.a(SourceFile:754) at dwy.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:629) at java.lang.Thread.run(Thread.java:745)
– System Details --Details: Minecraft Version: 1.14 Pre-Release 1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1063004896 bytes (1013 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Player Count: 1 / 8; [vg['GreenPlanet669'/257, l='Mellacon', x=37.58, y=99.39, z=-672.59]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.