Falling from a dragon crashes server

[Mindfreak66]

Playing on Minecraft 1.20.1 server (on MCProHosting) with Forge 47.1.0 and latest version of Dragon Mounts Legacy. When flying, if a player falls to their death, the server crashes. Crash log is below. Have died otheer ways with no issues, just a crash when falling off a dragon.

Logs:

---- Minecraft Crash Report ---- // I blame Dinnerbone.

Time: 2023-08-25 21:01:30 Description: Ticking entity

java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.Entity.m20182()" because "p20281" is null at net.minecraft.world.entity.Entity.m20280(Entity.java:1416) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at com.github.kay9.dragonmounts.dragon.ai.DragonFollowOwnerGoal.m8045(DragonFollowOwnerGoal.java:80) ~[dragonmounts-1.20.1-1.1.5.b3.jar%23102!/:1.20.1-1.1.5.b3] {re:classloading} at net.minecraft.world.entity.ai.goal.WrappedGoal.m8045(WrappedGoal.java:27) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.ai.goal.GoalSelector.m25373(GoalSelector.java:85) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.Mob.m6140(Mob.java:760) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.entity.LivingEntity.m8107(LivingEntity.java:2542) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.world.entity.Mob.m8107(Mob.java:536) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.entity.AgeableMob.m8107(AgeableMob.java:128) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.animal.Animal.m8107(Animal.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.LivingEntity.m8119(LivingEntity.java:2292) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.world.entity.Mob.m8119(Mob.java:337) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at com.github.kay9.dragonmounts.dragon.TameableDragon.m8119(TameableDragon.java:332) ~[dragonmounts-1.20.1-1.1.5.b3.jar%23102!/:1.20.1-1.1.5.b3] {re:classloading} at net.minecraft.server.level.ServerLevel.m8647(ServerLevel.java:693) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.Level.m46653(Level.java:479) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.m184063(ServerLevel.java:343) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.entity.EntityTickList.m156910(EntityTickList.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.server.level.ServerLevel.m8793(ServerLevel.java:323) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m5703(MinecraftServer.java:893) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.dedicated.DedicatedServer.m5703(DedicatedServer.java:273) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m5705(MinecraftServer.java:814) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m130011(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m206580(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:833) ~[?:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head -- Thread: Server thread Stacktrace: at net.minecraft.world.entity.Entity.m20280(Entity.java:1416) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at com.github.kay9.dragonmounts.dragon.ai.DragonFollowOwnerGoal.m8045(DragonFollowOwnerGoal.java:80) ~[dragonmounts-1.20.1-1.1.5.b3.jar%23102!/:1.20.1-1.1.5.b3] {re:classloading} at net.minecraft.world.entity.ai.goal.WrappedGoal.m8045(WrappedGoal.java:27) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.ai.goal.GoalSelector.m25373(GoalSelector.java:85) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.Mob.m6140(Mob.java:760) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.entity.LivingEntity.m8107(LivingEntity.java:2542) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.world.entity.Mob.m8107(Mob.java:536) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.entity.AgeableMob.m8107(AgeableMob.java:128) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.animal.Animal.m8107(Animal.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.world.entity.LivingEntity.m8119(LivingEntity.java:2292) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B,re:mixin,pl:accesstransformer:B} at net.minecraft.world.entity.Mob.m8119(Mob.java:337) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at com.github.kay9.dragonmounts.dragon.TameableDragon.m8119(TameableDragon.java:332) ~[dragonmounts-1.20.1-1.1.5.b3.jar%23102!/:1.20.1-1.1.5.b3] {re:classloading} at net.minecraft.server.level.ServerLevel.m8647(ServerLevel.java:693) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.Level.m46653(Level.java:479) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.m184063(ServerLevel.java:343) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.entity.EntityTickList.m156910(EntityTickList.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.server.level.ServerLevel.m8793(ServerLevel.java:323) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} -- Entity being ticked -- Details: Entity Type: dragonmounts:dragon (com.github.kay9.dragonmounts.dragon.TameableDragon) Entity ID: 8 Entity Name: Aether Dragon Entity's Exact location: -282.27, 74.11, 26.41 Entity's Block location: World: (-283,74,26), Section: (at 5,10,10 in -18,4,1; chunk contains blocks -288,-64,16 to -273,319,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,-64,0 to -1,319,511) Entity's Momentum: -0.91, -0.18, -0.10 Entity's Passengers: [] Entity's Vehicle: null Stacktrace: at net.minecraft.world.level.Level.m46653(Level.java:479) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.m184063(ServerLevel.java:343) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.entity.EntityTickList.m156910(EntityTickList.java:54) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading} at net.minecraft.server.level.ServerLevel.m8793(ServerLevel.java:323) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m5703(MinecraftServer.java:893) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.dedicated.DedicatedServer.m5703(DedicatedServer.java:273) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m5705(MinecraftServer.java:814) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m130011(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m206580(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:833) ~[?:?] {}

-- Affected level -- Details: All players: 0 total; [] Chunk stats: 2209 Level dimension: minecraft:overworld Level spawn location: World: (-288,68,0), Section: (at 0,4,0 in -18,4,0; chunk contains blocks -288,-64,0 to -273,319,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,-64,0 to -1,319,511) Level time: 15075417 game time, 1736360 day time Level name: New world Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false Level weather: Rain time: 71505 (now: false), thunder time: 50366 (now: false) Known server brands: vanilla, Spigot, forge Removed feature flags: Level was modded: true Level storage version: 0x04ABD - Anvil Stacktrace: at net.minecraft.server.MinecraftServer.m5703(MinecraftServer.java:893) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.dedicated.DedicatedServer.m5703(DedicatedServer.java:273) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m5705(MinecraftServer.java:814) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m130011(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.m206580(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23105!/:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:833) ~[?:?] {}

-- System Details -- Details: Minecraft Version: 1.20.1 Minecraft Version ID: 1.20.1 Operating System: Linux (amd64) version 5.15.0-78-generic Java Version: 17.0.5, Amazon.com Inc. Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Amazon.com Inc. Memory: 895091288 bytes (853 MiB) / 1568669696 bytes (1496 MiB) up to 2147483648 bytes (2048 MiB) CPUs: 112 Processor Vendor: GenuineIntel Processor Name: Intel(R) Xeon(R) Gold 6348 CPU @ 2.60GHz Identifier: Intel64 Family 6 Model 106 Stepping 6 Microarchitecture: Ice Lake (Server) Frequency (GHz): 2.60 Number of physical packages: 2 Number of physical CPUs: 56 Number of logical CPUs: 112 Graphics card #0 name: unknown Graphics card #0 vendor: unknown Graphics card #0 VRAM (MB): 0.00 Graphics card #0 deviceId: unknown Graphics card #0 versionInfo: unknown Virtual memory max (MB): 515957.69 Virtual memory used (MB): 616940.25 Swap memory total (MB): 8192.00 Swap memory used (MB): 6.00 JVM Flags: 20 total; -Xmx2048M -XX:+UseContainerSupport -XX:MaxMetaspaceSize=512M -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=8 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:MaxTenuringThreshold=1 Server Running: true Player Count: 1 / 35; [ServerPlayer['Mindfreak66'/184, l='ServerLevel[New world]', x=-274.02, y=67.00, z=9.77, removed=KILLED]] Data Packs: vanilla, file/bukkit, file/graves v2.8.8 (MC 1.20.x).zip, file/more mob heads v2.12.1 (MC 1.20.x).zip, file/multiplayer sleep v2.6.4 (MC 1.20.x).zip, file/player head drops v1.1.4 (MC 1.20.x).zip, file/VanillaTweaks_c724570_MC1.20.x.zip, mod:forge, mod:jei, mod:dragonmounts, file/timber v2.1.6 (MC 1.20.x).zip Enabled Feature Flags: minecraft:vanilla World Generation: Stable Is Modded: Definitely; Server brand changed to 'forge' Type: Dedicated Server (map_server.txt) ModLauncher: 10.0.9+10.0.9+main.dcd20f30 ModLauncher launch target: forgeserver ModLauncher naming: srg ModLauncher services: mixin-0.8.5.jar mixin PLUGINSERVICE eventbus-6.0.5.jar eventbus PLUGINSERVICE fmlloader-1.20.1-47.1.3.jar slf4jfixer PLUGINSERVICE fmlloader-1.20.1-47.1.3.jar object_holder_definalize PLUGINSERVICE fmlloader-1.20.1-47.1.3.jar runtime_enum_extender PLUGINSERVICE fmlloader-1.20.1-47.1.3.jar capability_token_subclass PLUGINSERVICE accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE fmlloader-1.20.1-47.1.3.jar runtimedistcleaner PLUGINSERVICE modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE FML Language Providers: minecraft@1.0 lowcodefml@null javafml@null Mod List: server-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |DONE |Manifest: NOSIGNATURE forge-1.20.1-47.1.3-universal.jar |Forge |forge |47.1.3 |DONE |Manifest: 84:ce:76:e8:45:35:e4:0e:63:86:df:47:59:80:0f:67:6c:c1:5f:6e:5f:4d:b3:54:47:1a:9f:7f:ed:5e:f2:90 dragonmounts-1.20.1-1.1.5.b3.jar |Dragon Mounts: Legacy |dragonmounts |1.1.5.b3 |DONE |Manifest: NOSIGNATURE jei-1.20.1-forge-15.2.0.26.jar |Just Enough Items |jei |15.2.0.26 |DONE |Manifest: NOSIGNATURE Crash Report UUID: fc835771-d776-4067-80ff-ee7289e4409f FML: 47.1 Forge: net.minecraftforge:47.1.3

[AnimalsWritingCode]

This should be fixed by #185

[Mindfreak66]

Thanksfor the response. I'm fairly new to modding and github, so not sure what exactly you mean? Is there an update to download for this fix? Thanks so much.

[AnimalsWritingCode]

There is a fix, but it is not in a release yet. I am not the owner of DM:L, so I cannot create a release with the fix.

I imagine Kay9 is busy at the moment and I was the one who introduced this issue, so I was just making a note so when they catch up on things they know there is a fix ready for this issue.

[Mindfreak66]

Perfect, thanks for much for the reply!

[suerion]

Hey @Kay9Unit did you fix it for 1.20.1 version? Because the latest beta update was on 08.07.2023 it does crash on our side on the server? would you update it on Curseforge?

Thanks a lot