---- Minecraft Crash Report ----
// There are four lights!

Time: 3/25/21 4:58 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at aea.f(SourceFile:121)
	at aaf.y(SourceFile:83)
	at aaf.<init>(SourceFile:22)
	at aag.d(SourceFile:167)
	at net.minecraft.server.MinecraftServer.w(SourceFile:648)
	at net.minecraft.server.MinecraftServer.a(SourceFile:260)
	at java.lang.Thread.run(Thread.java:748)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 21w11a
	Minecraft Version ID: 21w11a
	Operating System: Linux (amd64) version 5.4.78-2-pve
	Java Version: 1.8.0_211, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1186448344 bytes (1131 MB) / 1819279360 bytes (1735 MB) up to 3817865216 bytes (3641 MB)
	CPUs: 48
	JVM Flags: 2 total; -Xmx4096M -Xms512M
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)