---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 5/9/18 1:02 PM
Description: Exception in server tick loop

java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.CompletableFuture$AsyncSupply@335fa0c0 rejected from java.util.concurrent.ThreadPoolExecutor@698a7843[Shutting down, pool size = 1, active threads = 1, queued tasks = 0, completed tasks = 1109]
	at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
	at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
	at java.util.concurrent.Executors$DelegatedExecutorService.execute(Executors.java:668)
	at java.util.concurrent.CompletableFuture.asyncSupplyStage(CompletableFuture.java:1604)
	at java.util.concurrent.CompletableFuture.supplyAsync(CompletableFuture.java:1830)
	at afz.b(SourceFile:66)
	at agb.a(SourceFile:40)
	at si.a(SourceFile:166)
	at net.minecraft.server.MinecraftServer.g_(SourceFile:384)
	at net.minecraft.server.MinecraftServer.a(SourceFile:336)
	at ru.d(SourceFile:247)
	at net.minecraft.server.MinecraftServer.run(SourceFile:497)
	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: 18w19b
	Operating System: Linux (amd64) version 4.9.0-6-amd64
	Java Version: 1.8.0_171, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 666725104 bytes (635 MB) / 1038024704 bytes (989 MB) up to 7265714176 bytes (6929 MB)
	JVM Flags: 2 total; -Xms1G -Xmx7G
	Profiler Position: N/A (disabled)
	Player Count: 0 / 12; []
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)