---- Minecraft Crash Report ---- // This doesn't make any sense! Time: 08/05/2019, 03:06 Description: Exception generating new chunk java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at cjg.b(SourceFile:67) at cjg.a(SourceFile:57) at cfh.a(SourceFile:90) at cff$c.a(SourceFile:161) at cff$c.(SourceFile:98) at cff.a(SourceFile:280) at cev.a(SourceFile:25) at ceu$a.a(SourceFile:89) at bwz.a(SourceFile:187) at bxd.d(SourceFile:44) at bxd.a(SourceFile:199) at us.a(SourceFile:484) at com.mojang.datafixers.util.Either$Left.map(Either.java:38) at us.a(SourceFile:478) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) at uu.b(SourceFile:57) at agn.e(SourceFile:83) at agn.a(SourceFile:123) at agn.run(SourceFile:91) at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Server-Worker-2 Stacktrace: at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at cjg.b(SourceFile:67) at cjg.a(SourceFile:57) at cfh.a(SourceFile:90) at cff$c.a(SourceFile:161) at cff$c.(SourceFile:98) at cff.a(SourceFile:280) at cev.a(SourceFile:25) at ceu$a.a(SourceFile:89) at bwz.a(SourceFile:187) at bxd.d(SourceFile:44) at bxd.a(SourceFile:199) -- Chunk to be generated -- Details: Location: 4,1 Position hash: 4294967300 Generator: byp@57b940e6 Stacktrace: at us.a(SourceFile:484) at com.mojang.datafixers.util.Either$Left.map(Either.java:38) at us.a(SourceFile:478) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) at uu.b(SourceFile:57) at agn.e(SourceFile:83) at agn.a(SourceFile:123) at agn.run(SourceFile:91) at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) -- System Details -- Details: Minecraft Version: 1.14.1 Pre-Release 1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 11.0.2, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 730203480 bytes (696 MB) / 1409286144 bytes (1344 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 8 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump [03:06:10] [Client thread/INFO]: Preparing spawn area: 7% ---- Minecraft Crash Report ---- // Why did you do that? Time: 08/05/2019, 03:06 Description: Exception generating new chunk java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at cjg.b(SourceFile:67) at cjg.a(SourceFile:57) at cfh.a(SourceFile:90) at cff$c.a(SourceFile:161) at cff$c.(SourceFile:98) at cff.a(SourceFile:280) at cev.a(SourceFile:25) at ceu$a.a(SourceFile:89) at bwz.a(SourceFile:187) at bxd.d(SourceFile:44) at bxd.a(SourceFile:199) at us.a(SourceFile:484) at com.mojang.datafixers.util.Either$Left.map(Either.java:38) at us.a(SourceFile:478) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) at uu.b(SourceFile:57) at agn.e(SourceFile:83) at agn.a(SourceFile:123) at agn.run(SourceFile:91) at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Server-Worker-3 Stacktrace: at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at cjg.b(SourceFile:67) at cjg.a(SourceFile:57) at cfh.a(SourceFile:90) at cff$c.a(SourceFile:161) at cff$c.(SourceFile:98) at cff.a(SourceFile:280) at cev.a(SourceFile:25) at ceu$a.a(SourceFile:89) at bwz.a(SourceFile:187) at bxd.d(SourceFile:44) at bxd.a(SourceFile:199) -- Chunk to be generated -- Details: Location: 4,1 Position hash: 4294967300 Generator: byp@57b940e6 Stacktrace: at us.a(SourceFile:484) at com.mojang.datafixers.util.Either$Left.map(Either.java:38) at us.a(SourceFile:478) at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072) at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) at uu.b(SourceFile:57) at agn.e(SourceFile:83) at agn.a(SourceFile:123) at agn.run(SourceFile:91) at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177) -- System Details -- Details: Minecraft Version: 1.14.1 Pre-Release 1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 11.0.2, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 730203480 bytes (696 MB) / 1409286144 bytes (1344 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 8 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump