Certain chunks won't generate and cause commands to stop functioning

Occasionally, chunks would not generate, commands would stop working, and the game would only close when force closed. This is the error message that it produced:

Minecraft Crash Report ----
// I feel sad now 😞

Time: 6/15/18 2:07 PM
Description: Exception generating new chunk

java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2237)
at sm.c(SourceFile:126)
at bbj.d(SourceFile:248)
at bbj.l(SourceFile:243)
at bbj.a_(SourceFile:583)
at bbj.a(SourceFile:425)
at bbj.b(SourceFile:397)
at bbj.a(SourceFile:363)
at bbj.a(SourceFile:294)
at bbj.g(SourceFile:324)
at biw.a(SourceFile:51)
at boh.b(SourceFile:264)
at sn.n_(SourceFile:452)
at sn.i_(SourceFile:220)
at net.minecraft.server.MinecraftServer.w(SourceFile:693)
at net.minecraft.server.MinecraftServer.v(SourceFile:626)
at dir.v(SourceFile:156)
at net.minecraft.server.MinecraftServer.run(SourceFile:531)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.OutOfMemoryError: Java heap space
at it.unimi.dsi.fastutil.ints.IntArrayFIFOQueue.resize(IntArrayFIFOQueue.java:175)
at it.unimi.dsi.fastutil.ints.IntArrayFIFOQueue.expand(IntArrayFIFOQueue.java:189)
at it.unimi.dsi.fastutil.ints.IntArrayFIFOQueue.enqueue(IntArrayFIFOQueue.java:201)
at cbt.a(SourceFile:138)
at cbt.a(SourceFile:142)
at cbt.a(SourceFile:126)
at cbu.a(SourceFile:20)
at te.a(SourceFile:23)
at ta.a(SourceFile:35)
at bqi.a(SourceFile:95)
at th.a(SourceFile:61)
at th.a(SourceFile:24)
at agl$a.a(SourceFile:131)
at agl$a$$Lambda$1723/110348836.apply(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Thread: Server thread
Stacktrace:
at sm.a(SourceFile:170)

– Chunk to be generated –
Details:
Location: -34406,40806
Position hash: 175264730413466
Generator: bsa@7c80c9bc
Stacktrace:
at sm.a(SourceFile:170)
at sm.c(SourceFile:129)
at bbj.d(SourceFile:248)
at bbj.l(SourceFile:243)
at bbj.a_(SourceFile:583)
at bbj.a(SourceFile:425)
at bbj.b(SourceFile:397)
at bbj.a(SourceFile:363)
at bbj.a(SourceFile:294)
at bbj.g(SourceFile:324)
at biw.a(SourceFile:51)
at boh.b(SourceFile:264)
at sn.n_(SourceFile:452)
at sn.i_(SourceFile:220)
at net.minecraft.server.MinecraftServer.w(SourceFile:693)
at net.minecraft.server.MinecraftServer.v(SourceFile:626)
at dir.v(SourceFile:156)
at net.minecraft.server.MinecraftServer.run(SourceFile:531)
at java.lang.Thread.run(Thread.java:745)

– Affected level –
Details:
Level name: thigwig
All players: 1 total; [sp['SailorDoge'/859, l='thigwig', x=-550713.61, y=77.88, z=652529.04]]
Chunk stats: ServerChunkCache: 2392 Drop: 0
Level seed: 1477581161
Level generator: ID 02 - largeBiomes, ver 0. Features enabled: true
Level generator options: null
Level spawn location: World: (-550605,69,649160), Chunk: (at 3,4,8 in -34413,40572; contains blocks -550608,0,649152 to -550593,255,649167), Region: (-1076,1267; contains chunks -34432,40544 to -34401,40575, blocks -550912,0,648704 to -550401,255,649215)
Level time: 12811029 game time, 1047 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true

– System Details –
Details:
Minecraft Version: 1.13-pre2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1275503624 bytes (1216 MB) / 3221225472 bytes (3072 MB) up to 3221225472 bytes (3072 MB)
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx3G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [sp['SailorDoge'/859, l='thigwig', x=-550713.61, y=77.88, z=652529.04]]
Data Packs: vanilla, file/Companion (incompatible)
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.