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Error occured while attempting to generate a dungeon with preset. Seems like generator cannot read room list from the generation.yml

Error here: maps.zip [generation.yml](/uploads/026b147a86e5156bffb16b4dc180fc7a/generation.yml)[14:49:17 WARN]: java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Map$Entry.getValue()" because the return value of "java.util.NavigableMap.higherEntry(Object)" is null [14:49:17 WARN]: at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) [14:49:17 WARN]: at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:205) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.api.generation.layout.Layout.generate(Layout.java:181) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.dungeons.instancetypes.play.InstanceProcedural.init(InstanceProcedural.java:85) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.dungeons.dungeontypes.DungeonProcedural.createPlaySession(DungeonProcedural.java:178) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.dungeons.dungeontypes.DungeonProcedural.lambda$prepInstance$1(DungeonProcedural.java:112) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.utility.tasks.ProcessTimer.run(ProcessTimer.java:12) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.dungeons.dungeontypes.DungeonProcedural.lambda$prepInstance$2(DungeonProcedural.java:109) [14:49:17 WARN]: at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:86) [14:49:17 WARN]: at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) [14:49:17 WARN]: at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) [14:49:17 WARN]: at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) [14:49:17 WARN]: at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) [14:49:17 WARN]: at java.base/java.lang.Thread.run(Thread.java:1583) [14:49:17 WARN]: Caused by: java.lang.NullPointerException: Cannot invoke "java.util.Map$Entry.getValue()" because the return value of "java.util.NavigableMap.higherEntry(Object)" is null [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.utility.RandomCollection.next(RandomCollection.java:29) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.api.generation.layout.Layout.selectFirstRoom(Layout.java:235) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.api.generation.layout.LayoutBranching.generateTrunk(LayoutBranching.java:124) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.api.generation.layout.LayoutBranching.tryLayout(LayoutBranching.java:108) [14:49:17 WARN]: at MythicDungeons-2.0.0-SNAPSHOT.jar//net.playavalon.mythicdungeons.api.generation.layout.Layout.lambda$generate$0(Layout.java:162) [14:49:17 WARN]: at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) [14:49:17 WARN]: ... 3 more [14:49:17 ERROR]: [MythicDungeons] §c== FAILED TO LOAD DUNGEON!! Failed to generate layout. ==