Versions

• Minecraft: 1.14.4
• Forge: 28.1.26
• Vampirism: Vampirism-1.14.4-1.6.0-alpha+20190930-2052

Issue Description

When running on a server, server crashes when a player logs out, even if the player has had no interaction with the mod. Near as i can tell its an issue with the mod checking if vampire on logout

Reproduce Steps

Install on server with said version of forge, log in, log out.

Additional Information

there are other mods on the server, but near as i can tell the crash report points to this mod in particular as the issue

---- Minecraft Crash Report ----
// Why did you do that?

Time: 1/10/19 9:21 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at fr.zeamateis.damage_indicator.common.event.CommonEventHandler.onEntityHasPotionRemoved(CommonEventHandler.java:96) ~[?:0.0.6] {re:classloading}
at net.minecraftforge.eventbus.ASMEventHandler_205_CommonEventHandler_onEntityHasPotionRemoved_PotionRemoveEvent.invoke(.dynamic) ~[?:?] {}
at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:80) ~[eventbus-1.0.0-service.jar:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:258) ~[eventbus-1.0.0-service.jar:?] {}
at net.minecraft.entity.LivingEntity.func_195063_d(LivingEntity.java:791) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:fml:apotheosis:coremodmethod,xf:fml:caelus:coremodone,pl:runtimedistcleaner:A}
at de.teamlapen.vampirism.player.vampire.VampirePlayer.endFeeding(VampirePlayer.java:317) ~[?:1.6.0-alpha+20190930-2052] {re:classloading}
at de.teamlapen.vampirism.player.vampire.VampirePlayer.onPlayerLoggedOut(VampirePlayer.java:626) ~[?:1.6.0-alpha+20190930-2052] {re:classloading}
at de.teamlapen.lib.entity.EntityEventHandler.lambda$onPlayerLoggedOut$6(EntityEventHandler.java:106) ~[?:1.6.0-alpha+20190930-2052] {re:classloading}
at net.minecraftforge.common.util.LazyOptional.ifPresent(LazyOptional.java:161) ~[?:?] {re:classloading}
at de.teamlapen.lib.entity.EntityEventHandler.onPlayerLoggedOut(EntityEventHandler.java:106) ~[?:1.6.0-alpha+20190930-2052] {re:classloading}
at net.minecraftforge.eventbus.ASMEventHandler_543_EntityEventHandler_onPlayerLoggedOut_PlayerLoggedOutEvent.invoke(.dynamic) ~[?:?] {}
at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:80) ~[eventbus-1.0.0-service.jar:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:258) ~[eventbus-1.0.0-service.jar:?] {}
at net.minecraftforge.fml.hooks.BasicEventHooks.firePlayerLoggedOut(BasicEventHooks.java:48) ~[?:?] {re:classloading}
at net.minecraft.server.management.PlayerList.func_72367_e(PlayerList.java:291) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.network.play.ServerPlayNetHandler.func_147231_a(ServerPlayNetHandler.java:900) ~[?:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.network.NetworkManager.func_179293_l(NetworkManager.java:367) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:153) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:846) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:324) ~[?:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:764) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:622) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at java.lang.Thread.run(Unknown Source) [?:1.8.0_191] {}

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

-- System Details --
Details:
Minecraft Version: 1.14.4
Minecraft Version ID: 1.14.4
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_191, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 7350850904 bytes (7010 MB) / 8301576192 bytes (7917 MB) up to 8301576192 bytes (7917 MB)
CPUs: 8
JVM Flags: 2 total; -Xms6024M -Xmx8048M
ModLauncher: 4.0.0+61+ca3b447
ModLauncher launch target: fmlserver
ModLauncher naming: srg
ModLauncher services:
/eventbus-1.0.0-service.jar eventbus PLUGINSERVICE
/forge-1.14.4-28.1.26.jar object_holder_definalize PLUGINSERVICE
/forge-1.14.4-28.1.26.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-1.0.0-shadowed.jar accesstransformer PLUGINSERVICE
/forge-1.14.4-28.1.26.jar capability_inject_definalize PLUGINSERVICE
/forge-1.14.4-28.1.26.jar runtimedistcleaner PLUGINSERVICE
/forge-1.14.4-28.1.26.jar fml TRANSFORMATIONSERVICE
FML: 28.1
Forge: net.minecraftforge:28.1.26
FML Language Providers:
[email protected]
minecraft@1
Mod List:
AirHop-v1.1.1-1.14.4.jar Air Hop {[email protected] DONE}
allomancy-3.0.0-beta3.jar Allomancy {[email protected] DONE}
Apotheosis-1.14.4-2.3.2.jar Apotheosis {[email protected] DONE}
BBOutlineReloaded-1.0.13b-1.14.4-forge.jar BoundingBoxOutlineReloaded {[email protected] DONE}
Better+Muffling-1.14.4-0.3.0-Beta.jar Better Muffling {[email protected] DONE}
bettertridentreturn-1.14.4-1.0.0.jar Better Trident Return {[email protected] DONE}
caelus-FORGE-1.14.4-1.0.jar Caelus API {[email protected] DONE}
CarryOn+MC1.14.4+v1.12.3.jar Carry On {[email protected] DONE}
ChickenDropFeathers-2.0.jar Chicken Drop Feathers {[email protected] DONE}
chunkloader-1.14.4-1.0.0.jar Chunk Loader {[email protected] DONE}
clickmachine.jar Click Machine {[email protected] DONE}
CosmeticArmorReworked-1.14.4-v1a.jar CosmeticArmorReworked {[email protected] DONE}
create-mc1.14.4_v0.1.1.jar Create {[email protected] DONE}
curios-FORGE-1.14.4-1.0.jar Curios API {[email protected] DONE}
curiouselytra-FORGE-1.14.4-1.0.jar Curious Elytra {[email protected] DONE}
damage_indicator-0.0.6.jar Ama's Damage Indicator {[email protected] DONE}
DoggyTalents-1.14.4-1.15.1.7-universal.jar Doggy Talents {[email protected] DONE}
Druidcraft-1.14-0.1.31.jar Druidcraft {[email protected] DONE}
DungeonCrawl-1.14.4-1.3.0.jar Dungeon Crawl {[email protected] DONE}
dwmh-1.14.4-3.0.1.jar Dude! Where's my Horse? {[email protected] DONE}
enchantslash-1.14.4-1.0.0.jar EnchantSlash {[email protected] DONE}
EnderMagnet-1.14.3-1.0.0.jar Ender Magnet {[email protected] DONE}
essentials-1.14.4-2.5.1.jar Essentials {[email protected] DONE}
extraanvils-2.1a.jar Extra Anvils {[email protected] DONE}
extrabows-v1.14.4+b6.jar Extra Bows {[email protected] b6 DONE}
farlanders-1.14.4-1.0.0.jar The Farlanders {[email protected] DONE}
FastLeafDecay-v17.jar FastLeafDecay {fastleafdecay@v17 DONE}
FleshToLeather-1.14.3-1.1.0.jar FleshToLeather {[email protected] DONE}
flexible_skills-1.14.4-1.1.4.jar Flexible Skills Mod {[email protected] DONE}
ForgivingVoid_1.14.4-3.0.7.jar Forgiving Void {[email protected] DONE}
gravestone-1.15.1.jar Gravestone Mod {[email protected] DONE}
Harvest-forge-1.14.4-1.2.10-23.jar Harvest {harvest@version DONE}
inventorysorter-1.14.4-16.0.0.jar Simple Inventory Sorter {[email protected] DONE}
ironchest-1.14.4-9.1.5.jar Iron Chests {[email protected] DONE}
ironshulkerboxes-1.14.4-3.1.12.jar Iron Shulker Boxes {[email protected] DONE}
jei-1.14.4-6.0.0.13.jar Just Enough Items {[email protected] DONE}
Kathairis-1.14.4-alpha-0.15.jar Kathairis {[email protected] DONE}
LightOverlay-3.5.jar Light Overlay Forge {[email protected] DONE}
lycanitesmobs-1.14.4-2.1.0.2.jar Lycanites Mobs {[email protected] DONE}
MCFurnace-1.14.4-DEV-1.3.2.jar MCFurnace {[email protected] DONE}
metalbarrels-1.3c.jar Metal Barrels {[email protected] DONE}
Placebo-1.14.4-2.2.1.jar Placebo {[email protected] DONE}
recall-1.14.4-1.0.jar Recall {[email protected] DONE}
respawnablepets-1.0.5.1.jar Respawnable Pets {[email protected] DONE}
sit-1.14.4-v1.2.3.jar Sit {[email protected] DONE}
speedyhoppers-1.14.4-1.0.5.jar Speedy Hoppers {[email protected] DONE}
structurize-0.10.175-ALPHA.jar Structurize {[email protected] DONE}
minecolonies-0.10.406-ALPHA-universal.jar Minecolonies {[email protected] DONE}
themidnight-0.4.5.jar The Midnight {[email protected] DONE}
TreeChoppin-1.14.4-1.2.0.jar TreeChoppin {[email protected] DONE}
u_team_core-1.14.4-2.7.0.129.jar U Team Core {[email protected] DONE}
upsizer-mc1.14.4-5.0b2.jar Upsizer {[email protected] DONE}
useful_backpacks-1.14.4-1.7.0.34.jar Useful Backpacks {[email protected] DONE}
Vampirism-1.14.4-1.6.0-alpha+20190930-2052.jar Vampirism {[email protected]+20190930-2051 DONE, [email protected]+20190930-2051 DONE}
XaerosWorldMap_1.4.10.1_Forge_1.14.4.jar Xaero's World Map {[email protected] DONE}
YAMDA-4.0.1.jar YAMDA {[email protected] DONE}
forge-1.14.4-28.1.26-universal.jar Forge {[email protected] DONE}
forge-1.14.4-28.1.26-server.jar Minecraft {[email protected] DONE}
Player Count: 2 / 20; [ServerPlayerEntity['alfiealfie'/570, l='world', x=-519.02, y=71.00, z=-196.22], ServerPlayerEntity['SirQue'/656, l='world', x=-577.32, y=71.00, z=-234.27]]
Data Packs: mod:vampirism, mod:upsizer, mod:structurize, mod:sit, mod:recall, mod:minecolonies (incompatible), mod:lycanitesmobs, mod:kathairis, mod:flexible_skills, mod:farlanders, mod:extrabows, mod:extraanvils, mod:endermagnet, mod:enchantslash, mod:dungeoncrawl, mod:druidcraft, mod:create, mod:cosmeticarmorreworked, mod:clickmachine, mod:chickendropfeathersmod, mod:bettertridentreturn, mod:bettermuffling, mod:allomancy, mod:airhop, mod:bbor, mod:chunkloader, mod:curiouselytra, mod:curios, mod:fleshtoleather, mod:yamda, mod:xaeroworldmap, mod:uteamcore, mod:usefulbackpacks, mod:treechoppin, mod:speedyhoppers, mod:respawnablepets, mod:placebo, mod:midnight, mod:metalbarrels, mod:mcfurnace, mod:lightoverlay-forge, mod:jei, mod:ironshulkerbox, mod:ironchest, mod:inventorysorter, mod:harvest, mod:gravestone, mod:forgivingvoid, mod:forge, mod:fastleafdecay, mod:essentials, mod:dwmh, mod:doggytalents, mod:damage_indicator, mod:carryon, mod:caelus, mod:apotheosis, vanilla, file/logical-crafting (1).zip (incompatible), file/logical-crafting.zip (incompatible)
Is Modded: Definitely; Server brand changed to 'forge'
Type: Dedicated Server (map_server.txt)

Unfortunately, I cannot reproduce the issue.
As far as I can tell it isn't caused by Vampirism but introduced by some other mod, it is merely triggered by Vampirism.
Ama-s Damage Indicator is somehow involved https://github.com/JibayMcs/Ama-s-Damage-Indicator/blob/a7e688e7d914657bd8179ae9125acac4b35f042e/src/main/java/fr/zeamateis/damage_indicator/common/event/CommonEventHandler.java#L94 but I can't see any faulty behaviour on their side either (player.world should be non null at that point of the logout process)

If have released an update that should minimize the chance of crashing (Only if a player logs out while slowness potion is active).