Could you tell me if the server crash issue caused by the growth of the Poplar tree has been fixed?

[ToryGre]

Is your feature request related to a problem?

net.minecraft.ReportedException: Exception ticking world at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1670) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1483) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.dedicated.DedicatedServer.tickServer(DedicatedServer.java:404) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.MinecraftServer.processPacketsAndTick(MinecraftServer.java:1519) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1212) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:297) ~[paper-26.3.jar:26.3-3-db9f349] at java.base/java.lang.Thread.run(Thread.java:1474) ~[?:?] Caused by: java.lang.IllegalArgumentException: Unknown tree generator Reference{ResourceKey[minecraft:worldgen/feature / minecraft:red_poplar]=TreeFeature[trunkProvider=Direct{SimpleStateProvider[state=Block{minecraft:poplar_log}[axis=y]]}, trunkPlacer=net.minecraft.world.level.levelgen.feature.trunkplacers.PoplarTrunkPlacer@7777ed58, foliageProvider=Direct{SimpleStateProvider[state=Block{minecraft:red_poplar_leaves}[distance=7,persistent=false,waterlogged=false]]}, foliagePlacer=net.minecraft.world.level.levelgen.feature.foliageplacers.PoplarFoliagePlacer@64ace6b, rootPlacer=Optional.empty, minimumSize=net.minecraft.world.level.levelgen.feature.featuresize.TwoLayersFeatureSize@f34df3e, decorators=[net.minecraft.world.level.levelgen.feature.treedecorators.ShelfMushroomDecorator@705643ac], ignoreVines=true, belowTrunkProvider=Reference{ResourceKey[minecraft:worldgen/block_state_provider / minecraft:soil_beneath_tree]=RuleBasedStateProvider[fallback=null, rules=[Rule[ifTrue=net.minecraft.world.level.levelgen.blockpredicates.NotPredicate@38037dd3, then=Direct{SimpleStateProvider[state=Block{minecraft:dirt}]}]]]}]} at net.minecraft.world.level.block.grower.TreeGrower.setTreeType(TreeGrower.java:284) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.world.level.block.grower.TreeGrower.growTree(TreeGrower.java:146) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.world.level.block.SaplingBlock.advanceTree(SaplingBlock.java:56) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.world.level.block.SaplingBlock.randomTick(SaplingBlock.java:40) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.randomTick(BlockBehaviour.java:809) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerLevel.tickChunk(ServerLevel.java:739) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerChunkCache.lambda$tickChunks$0(ServerChunkCache.java:502) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ChunkMap.lambda$forEachBlockTickingChunk$0(ChunkMap.java:1004) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.DistanceManager.forEachEntityTickingChunk(DistanceManager.java:186) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ChunkMap.forEachBlockTickingChunk(ChunkMap.java:999) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerChunkCache.tickChunks(ServerChunkCache.java:502) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerChunkCache.tickChunks(ServerChunkCache.java:439) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerChunkCache.tick(ServerChunkCache.java:423) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:607) ~[paper-26.3.jar:26.3-3-db9f349] at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1666) ~[paper-26.3.jar:26.3-3-db9f349] ... 6 more [16:54:45 ERROR]: This crash report has been saved to: /home/container/crash-reports/crash-2026-09-21_16.54.45-server.txt [16:54:45 INFO]: Stopping server

Describe the solution you'd like.

add his ids to other sapplings

Describe alternatives you've considered.

idk

Other

The server crashes due to an error generating a custom tree (minecraft:red_poplar) when the sapling attempts to grow. The java.lang.IllegalArgumentException: Unknown tree generator error indicates that the game is trying to call the growth function for the poplar (PoplarTrunkPlacer), but this generator is not properly registered in the core or datapack, or its configuration is corrupted.

[Doc94]

This was already reported in #14258, fixed in ace932e (Build 5)

Please update your server.