---- Minecraft Crash Report -------- Minecraft Crash Report ----// Don't do that.
Time: 19/07/19 19:13Description: Exception ticking world
java.lang.NullPointerException: Exception ticking world at bie.b(SourceFile:67) at vk.a(SourceFile:320) at net.minecraft.server.MinecraftServer.b(SourceFile:835) at net.minecraft.server.MinecraftServer.a(SourceFile:774) at eac.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:642) 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 bie.b(SourceFile:67) at vk.a(SourceFile:320)
– Affected level --Details: All players: 1 total; [vl['jongjangdangalan'/129, l='New World', x=-55.99, y=70.11, z=1493.48]] Chunk stats: ServerChunkCache: 8508 Level dimension: minecraft:overworld Level name: New World Level seed: -4971093316209340292 Level generator: ID 00 - default, ver 1. Features enabled: true Level generator options: {} Level spawn location: World: (-64,65,176), Chunk: (at 0,4,0 in -4,11; contains blocks -64,0,176 to -49,255,191), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511) Level time: 221143 game time, 276561 day time Level storage version: 0x04ABD - Anvil Level weather: Rain time: 42249 (now: false), thunder time: 33336 (now: false) Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: falseStacktrace: at net.minecraft.server.MinecraftServer.b(SourceFile:835) at net.minecraft.server.MinecraftServer.a(SourceFile:774) at eac.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:642) at java.lang.Thread.run(Thread.java:745)
– System Details --Details: Minecraft Version: 1.14.4 Minecraft Version ID: 1.14.4 Operating System: Mac OS X (x86_64) version 10.14 Java Version: 1.8.0_74, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 838860800 bytes (800 MB) / 2080374784 bytes (1984 MB) up to 2147483648 bytes (2048 MB) CPUs: 4 JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Player Count: 1 / 8; [vl['jongjangdangalan'/129, l='New World', x=-55.99, y=70.11, z=1493.48]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.