Yesterday, I got a werewolf minion. I left him just just standing in front of me before I logged out. Today, when I login my minion was nowhere to be seen and when I tried to call him, he didn't appear and I disconnected saying "Internal Exception: com.google.gson.JsonParseException: Don't Know how to turn {} into a Component."
---- Minecraft Crash Report ----
// Daisy, daisy...
Time: 2026-06-06 16:53:43
Description: Exception in server tick loop
java.lang.NullPointerException: Cannot invoke "String.isEmpty()" because "p_129298_" is null
at net.minecraft.nbt.StringTag.m_129297_(StringTag.java:57) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:classloading}
at net.minecraft.nbt.CompoundTag.m_128359_(CompoundTag.java:213) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at de.teamlapen.vampirism.entity.minion.management.MinionData.serializeNBT(MinionData.java:187) ~[Vampirism-1.20.1-1.10.13.jar%23172!/:1.20.1-1.10.13] {re:classloading}
at de.teamlapen.vampirism.entity.minion.management.MinionData.serializeNBT(MinionData.java:179) ~[Vampirism-1.20.1-1.10.13.jar%23172!/:1.20.1-1.10.13] {re:classloading}
at de.teamlapen.vampirism.entity.minion.management.PlayerMinionController.serializeNBT(PlayerMinionController.java:401) ~[Vampirism-1.20.1-1.10.13.jar%23172!/:1.20.1-1.10.13] {re:classloading}
at de.teamlapen.vampirism.world.MinionWorldData.lambda$save$3(MinionWorldData.java:113) ~[Vampirism-1.20.1-1.10.13.jar%23172!/:1.20.1-1.10.13] {re:classloading}
at it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap$MapEntrySet.fastForEach(Object2ObjectOpenHashMap.java:1000) ~[fastutil-8.5.9.jar%2390!/:?] {}
at de.teamlapen.vampirism.world.MinionWorldData.m_7176_(MinionWorldData.java:111) ~[Vampirism-1.20.1-1.10.13.jar%23172!/:1.20.1-1.10.13] {re:classloading}
at net.minecraft.world.level.saveddata.SavedData.m_77757_(SavedData.java:36) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,re:classloading}
at net.minecraft.world.level.storage.DimensionDataStorage.m_164865_(DimensionDataStorage.java:128) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,re:classloading}
at java.util.HashMap.forEach(HashMap.java:1421) ~[?:?] {re:mixin}
at net.minecraft.world.level.storage.DimensionDataStorage.m_78151_(DimensionDataStorage.java:126) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,re:classloading}
at net.minecraft.server.level.ServerLevel.m_8806_(ServerLevel.java:759) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:modernfix-modernfix.mixins.json:perf.cache_strongholds.ServerLevelMixin,pl:mixin:APP:modernfix-modernfix.mixins.json:perf.faster_structure_location.ServerLevelMixin,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:refurbished_furniture.common.mixins.json:ServerLevelMixin,pl:mixin:APP:create.mixins.json:accessor.ServerLevelAccessor,pl:mixin:A}
at net.minecraft.server.level.ServerLevel.m_8643_(ServerLevel.java:738) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:modernfix-modernfix.mixins.json:perf.cache_strongholds.ServerLevelMixin,pl:mixin:APP:modernfix-modernfix.mixins.json:perf.faster_structure_location.ServerLevelMixin,pl:mixin:APP:citadel.mixins.json:ServerLevelMixin,pl:mixin:APP:refurbished_furniture.common.mixins.json:ServerLevelMixin,pl:mixin:APP:create.mixins.json:accessor.ServerLevelAccessor,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_129885_(MinecraftServer.java:507) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_195514_(MinecraftServer.java:532) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:824) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) ~[server-1.20.1-20230612.114412-srg.jar%23177!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
at java.lang.Thread.run(Thread.java:840) ~[?:?] {re:mixin}
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 1.20.1
Minecraft Version ID: 1.20.1
Operating System: Linux (amd64) version 6.8.0-110-generic
Java Version: 17.0.19, Eclipse Adoptium
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Eclipse Adoptium
Memory: 356338176 bytes (339 MiB) / 1086324736 bytes (1036 MiB) up to 2170552320 bytes (2070 MiB)
CPUs: 2
Processor Vendor: AuthenticAMD
Processor Name: AMD EPYC 7402P 24-Core Processor
Identifier: AuthenticAMD Family 23 Model 49 Stepping 0
Microarchitecture: Zen 2
Frequency (GHz): -0.00
Number of physical packages: 1
Number of physical CPUs: 24
Number of logical CPUs: 48
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): 129820.90
Virtual memory used (MB): 186976.69
Swap memory total (MB): 1024.00
Swap memory used (MB): 521.23
JVM Flags: 3 total; -XX:MaxMetaspaceSize=270M -Xmx2070M -Xms1035M
Server Running: true
Player Count: 1 / 20; [ServerPlayer['Kattius'/269, l='ServerLevel[world]', x=2816.81, y=69.00, z=-69.91]]
Data Packs: vanilla, mod:farmersdelight, mod:libipn (incompatible), mod:jade (incompatible), mod:jei, mod:attributefix (incompatible), mod:doggytalents, mod:kotlinforforge (incompatible), mod:sophisticatedcore (incompatible), mod:flywheel, mod:ponder (incompatible), mod:create, mod:clumps (incompatible), mod:journeymap (incompatible), mod:citadel (incompatible), mod:alexsmobs (incompatible), mod:sophisticatedbackpacks (incompatible), mod:vampirism, mod:vampirism_integrations (incompatible), mod:werewolves, mod:refurbished_furniture, mod:carryon (incompatible), mod:vampiresneedumbrellas (incompatible), mod:framework, mod:cloth_config (incompatible), mod:forge, mod:corpse, mod:betterdogs_dtn (incompatible), create:dynamic_data, mod:skinrestorer (incompatible), mod:clientsort (incompatible), mod:enchdesc (incompatible), mod:bookshelf, mod:voicechat (incompatible), mod:configured (incompatible), mod:guideapi_vp (incompatible), mod:commonality, mod:apexcore, mod:fantasyfurniture, mod:modernfix (incompatible), mod:ferritecore (incompatible), mod:memoryleakfix (incompatible), mod:excessive_building, mod:spectrelib (incompatible), mod:polymorph (incompatible)
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-1.20.1-47.4.10.jar slf4jfixer PLUGINSERVICE
fmlloader-1.20.1-47.4.10.jar object_holder_definalize PLUGINSERVICE
fmlloader-1.20.1-47.4.10.jar runtime_enum_extender PLUGINSERVICE
fmlloader-1.20.1-47.4.10.jar capability_token_subclass PLUGINSERVICE
accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE
fmlloader-1.20.1-47.4.10.jar runtimedistcleaner PLUGINSERVICE
modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE
modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE
FML Language Providers:
minecraft@1.0
kotlinforforge@4.12.0
javafml@null
lowcodefml@null
Mod List:
jei-1.20.1-forge-15.20.0.129.jar |Just Enough Items |jei |15.20.0.129 |DONE |Manifest: NOSIGNATURE
AttributeFix-Forge-1.20.1-21.0.5.jar |AttributeFix |attributefix |21.0.5 |DONE |Manifest: eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
DoggyTalentsNext-1.20.1-1.19.0.jar |Doggy Talents Next |doggytalents |1.19.0 |DONE |Manifest: NOSIGNATURE
sophisticatedcore-1.20.1-1.3.12.1578.jar |Sophisticated Core |sophisticatedcore |1.3.12.1578 |DONE |Manifest: NOSIGNATURE
Clumps-forge-1.20.1-12.0.0.4.jar |Clumps |clumps |12.0.0.4 |DONE |Manifest: NOSIGNATURE
journeymap-1.20.1-5.10.3-forge.jar |Journeymap |journeymap |5.10.3 |DONE |Manifest: NOSIGNATURE
modernfix-forge-5.26.2+mc1.20.1.jar |ModernFix |modernfix |5.26.2+mc1.20.1 |DONE |Manifest: NOSIGNATURE
citadel-2.6.3-1.20.1.jar |Citadel |citadel |2.6.3 |DONE |Manifest: NOSIGNATURE
alexsmobs-1.22.9.jar |Alex's Mobs |alexsmobs |1.22.9 |DONE |Manifest: NOSIGNATURE
configured-forge-1.20.1-2.2.3.jar |Configured |configured |2.2.3 |DONE |Manifest: 0d:78:5f:44:c0:47:0c:8c:e2:63:a3:04:43:d4:12:7d:b0:7c:35:37:dc:40:b1:c1:98:ec:51:eb:3b:3c:45:99
Bookshelf-Forge-1.20.1-20.2.15.jar |Bookshelf |bookshelf |20.2.15 |DONE |Manifest: eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
sophisticatedbackpacks-1.20.1-3.24.30.1614.jar |Sophisticated Backpacks |sophisticatedbackpacks |3.24.30.1614 |DONE |Manifest: NOSIGNATURE
Guide-API-VP-1.20.1-2.2.6.jar |Guide-API VP |guideapi_vp |2.2.6 |DONE |Manifest: NOSIGNATURE
clientsort-forge-2.2.1+1.20.1.jar |ClientSort |clientsort |2.2.1+1.20.1 |DONE |Manifest: NOSIGNATURE
carryon-forge-1.20.1-2.1.2.7.jar |Carry On |carryon |2.1.2.7 |DONE |Manifest: NOSIGNATURE
memoryleakfix-forge-1.17+-1.1.5.jar |Memory Leak Fix |memoryleakfix |1.1.5 |DONE |Manifest: NOSIGNATURE
Excessive Building 1.20.1-1.20.1-3.0.1.jar |Excessive Building |excessive_building |1.20.1-3.0.1 |DONE |Manifest: NOSIGNATURE
cloth-config-11.1.136-forge.jar |Cloth Config v10 API |cloth_config |11.1.136 |DONE |Manifest: NOSIGNATURE
forge-1.20.1-47.4.10-universal.jar |Forge |forge |47.4.10 |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
corpse-forge-1.20.1-1.0.23.jar |Corpse |corpse |1.20.1-1.0.23 |DONE |Manifest: NOSIGNATURE
server-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |DONE |Manifest: NOSIGNATURE
FarmersDelight-1.20.1-1.2.11.jar |Farmer's Delight |farmersdelight |1.20.1-1.2.11 |DONE |Manifest: NOSIGNATURE
voicechat-forge-1.20.1-2.6.14.jar |Simple Voice Chat |voicechat |1.20.1-2.6.14 |DONE |Manifest: NOSIGNATURE
libIPN-forge-1.20-4.0.2.jar |libIPN |libipn |4.0.2 |DONE |Manifest: NOSIGNATURE
EnchantmentDescriptions-Forge-1.20.1-17.1.20.jar |EnchantmentDescriptions |enchdesc |17.1.20 |DONE |Manifest: eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
commonality-1.20.1-7.0.0.jar |Commonality |commonality |7.0.0 |DONE |Manifest: NOSIGNATURE
Jade-1.20.1-Forge-11.13.2.jar |Jade |jade |11.13.2+forge |DONE |Manifest: NOSIGNATURE
spectrelib-forge-0.13.17+1.20.1.jar |SpectreLib |spectrelib |0.13.17+1.20.1 |DONE |Manifest: NOSIGNATURE
kffmod-4.12.0.jar |Kotlin For Forge |kotlinforforge |4.12.0 |DONE |Manifest: NOSIGNATURE
flywheel-forge-1.20.1-1.0.5.jar |Flywheel |flywheel |1.0.5 |DONE |Manifest: NOSIGNATURE
Ponder-Forge-1.20.1-1.0.91.jar |Ponder |ponder |1.0.91 |DONE |Manifest: NOSIGNATURE
create-1.20.1-6.0.8.jar |Create |create |6.0.8 |DONE |Manifest: NOSIGNATURE
polymorph-forge-0.49.10+1.20.1.jar |Polymorph |polymorph |0.49.10+1.20.1 |DONE |Manifest: NOSIGNATURE
Vampirism-1.20.1-1.10.13.jar |Vampirism |vampirism |1.10.13 |DONE |Manifest: NOSIGNATURE
vampirism_integrations-1.20.1-1.8.2.jar |Vampirism Integrations |vampirism_integrations |1.8.2 |DONE |Manifest: NOSIGNATURE
VampiresNeedUmbrellas-1.20.1-1.0.1.jar |Vampires Need Umbrellas |vampiresneedumbrellas |1.0.1 |DONE |Manifest: NOSIGNATURE
Werewolves-1.20.1-2.0.2.7.jar |Werewolves |werewolves |2.0.2.7 |DONE |Manifest: NOSIGNATURE
ferritecore-6.0.1-forge.jar |Ferrite Core |ferritecore |6.0.1 |DONE |Manifest: 41:ce:50:66:d1:a0:05:ce:a1:0e:02:85:9b:46:64:e0:bf:2e:cf:60:30:9a:fe:0c:27:e0:63:66:9a:84:ce:8a
apexcore-1.20.1-10.0.0.jar |ApexCore |apexcore |10.0.0 |DONE |Manifest: NOSIGNATURE
fantasyfurniture-1.20.1-9.0.0.jar |Fantasy's Furniture |fantasyfurniture |9.0.0 |DONE |Manifest: NOSIGNATURE
refurbished_furniture-forge-1.20.1-1.0.20.jar |MrCrayfish's Furniture Mod: Re|refurbished_furniture |1.0.20 |DONE |Manifest: 0d:78:5f:44:c0:47:0c:8c:e2:63:a3:04:43:d4:12:7d:b0:7c:35:37:dc:40:b1:c1:98:ec:51:eb:3b:3c:45:99
framework-forge-1.20.1-0.8.0.jar |Framework |framework |0.8.0 |DONE |Manifest: 0d:78:5f:44:c0:47:0c:8c:e2:63:a3:04:43:d4:12:7d:b0:7c:35:37:dc:40:b1:c1:98:ec:51:eb:3b:3c:45:99
skinrestorer-2.7.0+1.20-forge.jar |SkinRestorer |skinrestorer |2.7.0+1.20-forge |DONE |Manifest: NOSIGNATURE
Better_Dogs_X_Doggy_Talents_Next_v1.2.2 [Forge] - |Better Dogs For DTN |betterdogs_dtn |1.2.2 |DONE |Manifest: NOSIGNATURE
Crash Report UUID: 60643419-30ba-4190-807e-d05ae418ecaa
FML: 47.4
Forge: net.minecraftforge:47.4.10
Minecraft Version
1.20.x
Forge Version
47.4.20
Vampirism Version
1.20.1-1.10.13
Werewolves Version
1.20.1-2.0.2.7
Modpack
No response
Singleplayer/Multiplayer
Server
What happened?
Yesterday, I got a werewolf minion. I left him just just standing in front of me before I logged out. Today, when I login my minion was nowhere to be seen and when I tried to call him, he didn't appear and I disconnected saying "Internal Exception: com.google.gson.JsonParseException: Don't Know how to turn {} into a Component."
Relevant log output
Reproduce steps
Other relevant mods
Mods:
InventoryProfilesNext-forge-1.20-1.10.20
Excessive Building 1.20.1-1.20.1-3.0.1
Create-1.20.1-6.0.8
fantasyfurniture-1.20.1-9.0.0
voicechat-forge-1.20.1-2.6.14
modernfix-forge-5.26.2+mc1.20.1
Guide-API-VP-1.20.1-2.2.6
Loot Journal-forge-1.20.1-5.0.1
configured-forge-1.20.1-2.2.3
Bookshelf-Forge-1.20.1-20.2.15
EnchantmentDescriptions-Forge-1.20.1-17.1.20
Werewolves-1.20.1-2.0.2.7
Vampirism-1.20.1-1.10.13
Vampirism_integrations-1.20.1-1.8.2
VampiresNeedUmbrellas-1.20.1-1.0.1
sophisticatedcore-1.20.1-1.3.12.1578
sophisticatedbackpacks-1.20.1-3.24.30.1614
refurbished_furniture-forge-1.20.1-1.0.20
libIPN-forge-1.20-4.02
kotlinforforge-4.12.0-all
journeymap-1.20.1-5.10.3-forge
jei-1.20.1-forge-15.20.0.129
Jade-1.20.1-Forge-11.13.2
framework-forge-1.20.1-0.8.0
FarmersDelight-1.20.1-1.2.11
corpse-forge-1.20.1-1.0.23
Clumps-forge-1.20.1-12.0.0.4
cloth-config-11.1.136-forge
carryon-forge-1.20.1-2.1.2.7
DoggyTalentsNext-1.20.1-1.19.0
Better_Dogs_X_Doggy_Talents_Next_v1.2.2[Forge] - [1.20-1.20.1]
AttributeFix-Forge-1.20.1-21.0.5
citadel-2.6.3-1.20.1
alexsmobs-1.22.9
polymorph-forge-0.49.10+1.20.1