[14:27:31 INFO]: [bootstrap] Running Java 25 (OpenJDK 64-Bit Server VM 25.0.2+1-b432.48; JetBrains s.r.o. JBR-25.0.2+1-432.48-nomod) on Windows 11 10.0 (amd64) [14:27:31 INFO]: [bootstrap] Loading Paper 26.1.2-DEV (2026-05-08T18:27:30Z) for Minecraft 26.1.2 WARNING: A restricted method in java.lang.System has been called WARNING: java.lang.System::load has been called by org.jline.nativ.JLineNativeLoader in an unnamed module (file:/C:/Users/********/.gradle/caches/modules-2/files-2.1/org.jline/jline-native/3.27.1/d0b198908023385a089379a1c854aadc7a7dd99b/jline-native-3.27.1.jar) WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module WARNING: Restricted methods will be blocked in a future release unless native access is enabled 2026-05-08T18:27:31.663859800Z main WARN Advanced terminal features are not available in this environment [14:27:33 INFO]: [PluginInitializerManager] Initializing plugins... [14:27:33 INFO]: [PluginInitializerManager] Initialized 1 plugin [14:27:33 INFO]: [PluginInitializerManager] Paper plugins (1): - Paper-Test-Plugin (1.0.0-SNAPSHOT) WARNING: A terminally deprecated method in sun.misc.Unsafe has been called WARNING: sun.misc.Unsafe::objectFieldOffset has been called by org.joml.MemUtil$MemUtilUnsafe (file:/C:/Users/********/.gradle/caches/modules-2/files-2.1/org.joml/joml/1.10.8/fc0a71dad90a2cf41d82a76156a0e700af8e4f8d/joml-1.10.8.jar) WARNING: Please consider reporting this to the maintainers of class org.joml.MemUtil$MemUtilUnsafe WARNING: sun.misc.Unsafe::objectFieldOffset will be removed in a future release [14:27:38 INFO]: Environment: Environment[sessionHost=https://sessionserver.mojang.com, servicesHost=https://api.minecraftservices.com, profilesHost=https://api.mojang.com, name=PROD] [14:27:38 WARN]: [WorldFolderMigration] ===================== ! ALERT ! ===================== [14:27:38 WARN]: [WorldFolderMigration] World storage migration is required during startup. [14:27:38 WARN]: [WorldFolderMigration] If you do not have a backup: interrupt the server now. Use Ctrl+C, your panel kill function, etc. [14:27:38 WARN]: [WorldFolderMigration] ===================================================== [14:27:38 WARN]: [WorldFolderMigration] Continuing in 30 seconds... [14:28:08 INFO]: [WorldFolderMigration] Continuing with startup world migration. [14:28:08 INFO]: Starting upgrade for world "world" [14:28:09 INFO]: Upgrading progress: 2% [14:28:09 INFO]: File system capabilities: FileSystemCapabilities[atomicMove=true, hardLinks=true] [14:28:09 INFO]: Applying file structure changes for world "world" [14:28:09 INFO]: Moving new hardlinked world to top level [14:28:09 INFO]: Start cleanup [14:28:09 INFO]: Moving out old world folder [14:28:09 INFO]: Moving in new world folder [14:28:09 INFO]: Done applying file structure changes for world "world". Cleaning up outdated data... [14:28:09 INFO]: Upgrade done for world "world" [14:28:10 INFO]: [VanillaWorldMigration] Starting Vanilla import for world 'world' (minecraft:overworld) [14:28:10 INFO]: [WorldMigrationSupport] Migrating Paper world config from .\world\paper-world.yml to .\world\dimensions\minecraft\overworld\paper-world.yml [14:28:10 INFO]: [VanillaWorldMigration] Completed Vanilla import for world 'world' (minecraft:overworld) [14:28:11 INFO]: Loaded 1515 recipes [14:28:11 INFO]: Loaded 1617 advancements [14:28:11 INFO]: [ca.spottedleaf.dataconverter.minecraft.datatypes.MCTypeRegistry] Initialising converters for DataConverter... [14:28:11 INFO]: [ca.spottedleaf.dataconverter.minecraft.datatypes.MCTypeRegistry] Finished initialising converters for DataConverter in 355,0ms [14:28:11 INFO]: Starting json RPC server on localhost:0 [14:28:11 INFO]: Json-RPC Management connection listening on localhost:52677 [14:28:11 INFO]: Starting minecraft server version 26.1.2 [14:28:11 INFO]: Loading properties [14:28:12 INFO]: This server is running Paper version 26.1.2-DEV (2026-05-08T18:27:30Z) (Implementing API version 26.1.2.local-SNAPSHOT) [14:28:12 INFO]: [spark] This server bundles the spark profiler. For more information please visit https://docs.papermc.io/paper/profiling [14:28:12 INFO]: Using 4 threads for Netty based IO [14:28:12 INFO]: Server Ping Player Sample Count: 12 [14:28:12 INFO]: [MoonriseCommon] Paper is using 5 worker threads, 1 I/O threads [14:28:12 INFO]: Default game type: SURVIVAL [14:28:12 INFO]: Generating keypair [14:28:12 INFO]: Starting Minecraft server on *:25565 [14:28:12 INFO]: Paper: Using Java compression from Velocity. [14:28:12 INFO]: Paper: Using Java cipher from Velocity. [14:28:12 INFO]: [Paper-Test-Plugin] Loading server plugin Paper-Test-Plugin v1.0.0-SNAPSHOT [14:28:12 INFO]: Server permissions file permissions.yml is empty, ignoring it [14:28:12 INFO]: [Paper-Test-Plugin] Enabling Paper-Test-Plugin v1.0.0-SNAPSHOT [14:28:12 INFO]: Preparing level "world" [14:28:12 INFO]: [LegacyCraftBukkitWorldMigration] Starting legacy CraftBukkit import for world 'world_nether' (minecraft:the_nether) [14:28:12 ERROR]: [WorldMigrationSupport] The folder region already exists for dimension .\world\dimensions\minecraft\the_nether [14:28:12 ERROR]: [WorldMigrationSupport] The folder entities already exists for dimension .\world\dimensions\minecraft\the_nether [14:28:12 ERROR]: [WorldMigrationSupport] The folder poi already exists for dimension .\world\dimensions\minecraft\the_nether [14:28:12 ERROR]: Encountered an unexpected exception java.lang.RuntimeException: Failed to migrate world storage for world_nether at io.papermc.paper.world.PaperWorldLoader.getWorldInfoAndData(PaperWorldLoader.java:65) ~[main/:?] at io.papermc.paper.world.PaperWorldLoader.loadInitialWorld(PaperWorldLoader.java:150) ~[main/:?] at io.papermc.paper.world.PaperWorldLoader.loadInitialWorlds(PaperWorldLoader.java:139) ~[main/:?] at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:650) ~[main/:?] at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:382) ~[main/:?] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1301) ~[main/:?] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:304) ~[main/:?] at java.base/java.lang.Thread.run(Thread.java:1474) ~[?:?] Caused by: java.io.IOException: Refusing to overwrite dimension directories in .\world\dimensions\minecraft\the_nether while migrating from .\world_nether\DIM-1 at io.papermc.paper.world.migration.WorldMigrationSupport.migrateDimensionDirectories(WorldMigrationSupport.java:112) ~[main/:?] at io.papermc.paper.world.migration.LegacyCraftBukkitWorldMigration.run(LegacyCraftBukkitWorldMigration.java:82) ~[main/:?] at io.papermc.paper.world.migration.LegacyCraftBukkitWorldMigration.migrate(LegacyCraftBukkitWorldMigration.java:52) ~[main/:?] at io.papermc.paper.world.migration.WorldFolderMigration.migrateStartupWorld(WorldFolderMigration.java:48) ~[main/:?] at io.papermc.paper.world.PaperWorldLoader.getWorldInfoAndData(PaperWorldLoader.java:63) ~[main/:?] ... 7 more [14:28:13 ERROR]: This crash report has been saved to: U:\Dev\Spaces\PaperMC\Paper\run\crash-reports\crash-2026-05-08_14.28.13-server.txt [14:28:13 WARN]: java.lang.Throwable: Server stopped [14:28:13 WARN]: at io.papermc.paper.util.TraceUtil.dumpTraceForThread(TraceUtil.java:16) [14:28:13 WARN]: at net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:1049) [14:28:13 WARN]: at net.minecraft.server.dedicated.DedicatedServer.stopServer(DedicatedServer.java:941) [14:28:13 WARN]: at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1419) [14:28:13 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:304) [14:28:13 WARN]: at java.base/java.lang.Thread.run(Thread.java:1474) [14:28:13 INFO]: Stopping server [14:28:13 INFO]: [Paper-Test-Plugin] Disabling Paper-Test-Plugin v1.0.0-SNAPSHOT [14:28:13 INFO]: Saving players [14:28:13 INFO]: Saving worlds [14:28:13 INFO]: Saving chunks for level 'ServerLevel[world]'/minecraft:overworld [14:28:13 INFO]: [ChunkHolderManager] Waiting 60s for chunk system to halt for world 'minecraft:overworld' [14:28:13 INFO]: [ChunkHolderManager] Halted chunk system for world 'minecraft:overworld' [14:28:13 INFO]: [ChunkHolderManager] Saving all chunkholders for world 'minecraft:overworld' [14:28:13 INFO]: [ChunkHolderManager] Saved 0 block chunks, 0 entity chunks, 0 poi chunks in world 'minecraft:overworld' in 0,00s [14:28:13 INFO]: [ChunkHolderManager] Waiting 60s for chunk I/O to halt for world 'minecraft:overworld' [14:28:13 INFO]: [ChunkHolderManager] Halted I/O scheduler for world 'minecraft:overworld' [14:28:13 INFO]: ThreadedAnvilChunkStorage (world): All chunks are saved [14:28:13 INFO]: ThreadedAnvilChunkStorage: All dimensions are saved [14:28:13 INFO]: Waiting for all RegionFile I/O tasks to complete... [14:28:13 INFO]: All RegionFile I/O tasks to complete [14:28:13 INFO]: [MoonriseCommon] Awaiting termination of worker pool for up to 60s... [14:28:13 INFO]: [MoonriseCommon] Awaiting termination of I/O pool for up to 60s... [14:28:16 WARN]: java.lang.Throwable: Server stopped [14:28:16 WARN]: at io.papermc.paper.util.TraceUtil.dumpTraceForThread(TraceUtil.java:16) [14:28:16 WARN]: at net.minecraft.server.MinecraftServer.safeShutdown(MinecraftServer.java:1156) [14:28:16 WARN]: at org.bukkit.craftbukkit.util.ServerShutdownThread.run(ServerShutdownThread.java:17)