[14:47:36] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.server.v1_14_R1.ReportedException: Exception generating new chunk
    at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1070) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:396) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:959) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:804) [server.jar:git-Spigot-d05d3c1-087a2cf]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]
Caused by: java.lang.NullPointerException
    at net.minecraft.server.v1_14_R1.WorldGenStronghold.a(SourceFile:46) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkGenerator.createStructures(ChunkGenerator.java:144) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkStatus.d(SourceFile:52) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkStatus.a(SourceFile:217) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$24(PlayerChunkMap.java:482) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$22(PlayerChunkMap.java:480) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952) ~[?:1.8.0_171]
    at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926) ~[?:1.8.0_171]
    at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) ~[?:1.8.0_171]
    at net.minecraft.server.v1_14_R1.ChunkTaskQueueSorter.b(SourceFile:57) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.e(SourceFile:83) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.a(SourceFile:123) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.run(SourceFile:91) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) ~[?:1.8.0_171]
[14:47:36] [Server thread/ERROR]:   Cause of unexpected exception was
java.lang.NullPointerException: null
    at net.minecraft.server.v1_14_R1.WorldGenStronghold.a(SourceFile:46) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkGenerator.createStructures(ChunkGenerator.java:144) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkStatus.d(SourceFile:52) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ChunkStatus.a(SourceFile:217) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$24(PlayerChunkMap.java:482) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$22(PlayerChunkMap.java:480) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952) ~[?:1.8.0_171]
    at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926) ~[?:1.8.0_171]
    at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) ~[?:1.8.0_171]
    at net.minecraft.server.v1_14_R1.ChunkTaskQueueSorter.b(SourceFile:57) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.e(SourceFile:83) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.a(SourceFile:123) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at net.minecraft.server.v1_14_R1.ThreadedMailbox.run(SourceFile:91) ~[server.jar:git-Spigot-d05d3c1-087a2cf]
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) ~[?:1.8.0_171]
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) ~[?:1.8.0_171]