I was going through a nether portal for the first time in this world and then the game crashed. Here is the report.

---- Minecraft Crash Report -------- Minecraft Crash Report ----// You should try our sister game, Minceraft!
Time: 6/8/20 4:57 PMDescription: Ticking player
java.lang.NullPointerException: Ticking player at ze.a(SourceFile:651) at aoj.bg(SourceFile:1900) at aoj.ad(SourceFile:437) at aov.ad(SourceFile:320) at aoj.j(SourceFile:419) at aov.j(SourceFile:2181) at bdy.j(SourceFile:275) at ze.w_(SourceFile:418) at zv.b(SourceFile:206) at me.a(SourceFile:234) at zu.c(SourceFile:171) at net.minecraft.server.MinecraftServer.b(SourceFile:885) at net.minecraft.server.MinecraftServer.a(SourceFile:812) at eov.a(SourceFile:93) at net.minecraft.server.MinecraftServer.v(SourceFile:671) at net.minecraft.server.MinecraftServer.a(SourceFile:256) 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 ze.a(SourceFile:651) at aoj.bg(SourceFile:1900) at aoj.ad(SourceFile:437) at aov.ad(SourceFile:320) at aoj.j(SourceFile:419) at aov.j(SourceFile:2181) at bdy.j(SourceFile:275)
– Player being ticked --Details: Entity Type: minecraft:player (ze) Entity ID: 33 Entity Name: BluJay4Evr Entity's Exact location: 1581.41, 71.00, 227.89 Entity's Block location: World: (1581,71,227), Chunk: (at 13,4,3 in 98,14; contains blocks 1568,0,224 to 1583,255,239), Region: (3,0; contains chunks 96,0 to 127,31, blocks 1536,0,0 to 2047,255,511) Entity's Momentum: 0.00, -0.08, 0.00 Entity's Passengers: [] Entity's Vehicle: ~_ERROR~ NullPointerException: nullStacktrace: at ze.w_(SourceFile:418) at zv.b(SourceFile:206) at me.a(SourceFile:234)
– Ticking connection --Details: Connection: me@79c0d8e9Stacktrace: at zu.c(SourceFile:171) at net.minecraft.server.MinecraftServer.b(SourceFile:885) at net.minecraft.server.MinecraftServer.a(SourceFile:812) at eov.a(SourceFile:93) at net.minecraft.server.MinecraftServer.v(SourceFile:671) at net.minecraft.server.MinecraftServer.a(SourceFile:256) at java.lang.Thread.run(Thread.java:745)
– System Details --Details: Minecraft Version: 1.16 Pre-release 2 Minecraft Version ID: 1.16-pre2 Operating System: Mac OS X (x86_64) version 10.14.6 Java Version: 1.8.0_74, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 858455752 bytes (818 MB) / 2013265920 bytes (1920 MB) up to 2147483648 bytes (2048 MB) CPUs: 12 JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Player Count: 1 / 8; [ze['BluJay4Evr'/33, l='ServerLevel[Play Time]', x=1581.41, y=71.00, z=227.89]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.