I appear to be having a Problem in which the "java.lang.reflect.invocationtargetexception null" error keeps popping up regarding Lootr, stating it has failed to load, if Lootr is removed, other mods begin to display errors as well, three specific mods, once these mods are removed it works fine. which isn't good, considering i need these mods to play with a friend.

Here is the Crash Log
---- Minecraft Crash Report ----
// My bad.

Time: 2024-04-29 17:56:25
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
at net.minecraftforge.logging.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:60) ~[forge-1.20.1-47.2.0-universal.jar%23191!/:?] {re:classloading}
at net.minecraftforge.client.loading.ClientModLoader.completeModLoading(ClientModLoader.java:143) ~[forge-1.20.1-47.2.0-universal.jar%23191!/:?] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.lambda$new$4(Minecraft.java:571) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.Util.m_137521_(Util.java:421) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.client.Minecraft.lambda$new$5(Minecraft.java:564) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraftforge.client.loading.ForgeLoadingOverlay.m_88315_(ForgeLoadingOverlay.java:146) ~[forge-1.20.1-47.2.0-universal.jar%23191!/:?] {re:classloading}
at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:954) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23186!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,xf:fml:xaerominimap:xaero_minecraftclient,xf:fml:xaeroworldmap:xaero_wm_minecraftclient,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(Main.java:218) ~[1.20.1-forge-47.2.0.jar:?] {re:classloading,pl:runtimedistcleaner:A}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.2.0.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.2.0.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.2.0.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}

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

-- Head --
Thread: Render thread
Stacktrace:
at com.electronwill.nightconfig.core.io.ParsingException.notEnoughData(ParsingException.java:22) ~[core-3.6.4.jar%2393!/:?] {}
-- MOD lootr --
Details:
Caused by 0: java.lang.reflect.InvocationTargetException
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] {}
at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] {}
at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:68) ~[javafmllanguage-1.20.1-47.2.0.jar%23188!/:?] {}
at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$10(ModContainer.java:123) ~[fmlcore-1.20.1-47.2.0.jar%23187!/:?] {}
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?] {}
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?] {}
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?] {}
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?] {}
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?] {}

Mod File: /C:/Users/Logdo/AppData/Roaming/.minecraft/mods/lootr-1.20-0.7.30.73.jar
Failure message: Lootr (lootr) has failed to load correctly
	java.lang.reflect.InvocationTargetException: null
Mod Version: 0.7.29.68
Mod Issue URL: https://github.com/noobanidus/Lootr/issues
Exception message: com.electronwill.nightconfig.core.io.ParsingException: Not enough data available

Stacktrace:
at com.electronwill.nightconfig.core.io.ParsingException.notEnoughData(ParsingException.java:22) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.io.ReaderInput.directReadChar(ReaderInput.java:36) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.io.AbstractInput.readChar(AbstractInput.java:49) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.io.AbstractInput.readCharsUntil(AbstractInput.java:123) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.toml.TableParser.parseKey(TableParser.java:166) ~[toml-3.6.4.jar%2394!/:?] {}
at com.electronwill.nightconfig.toml.TableParser.parseDottedKey(TableParser.java:145) ~[toml-3.6.4.jar%2394!/:?] {}
at com.electronwill.nightconfig.toml.TableParser.parseNormal(TableParser.java:55) ~[toml-3.6.4.jar%2394!/:?] {}
at com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:44) ~[toml-3.6.4.jar%2394!/:?] {}
at com.electronwill.nightconfig.toml.TomlParser.parse(TomlParser.java:37) ~[toml-3.6.4.jar%2394!/:?] {}
at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:113) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:219) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.io.ConfigParser.parse(ConfigParser.java:202) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.file.WriteSyncFileConfig.load(WriteSyncFileConfig.java:73) ~[core-3.6.4.jar%2393!/:?] {}
at com.electronwill.nightconfig.core.file.AutosaveCommentedFileConfig.load(AutosaveCommentedFileConfig.java:85) ~[core-3.6.4.jar%2393!/:?] {}
at noobanidus.mods.lootr.config.ConfigManager.loadConfig(ConfigManager.java:174) ~[lootr-1.20-0.7.30.73.jar%23180!/:0.7.30.73] {re:mixin,re:classloading}
at noobanidus.mods.lootr.Lootr.(Lootr.java:33) ~[lootr-1.20-0.7.30.73.jar%23180!/:0.7.30.73] {re:classloading}
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] {}
at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] {}
at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:68) ~[javafmllanguage-1.20.1-47.2.0.jar%23188!/:?] {}
at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$10(ModContainer.java:123) ~[fmlcore-1.20.1-47.2.0.jar%23187!/:?] {}
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?] {}
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?] {}
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?] {}
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?] {}
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?] {}

-- System Details --
Details:
Minecraft Version: 1.20.1
Minecraft Version ID: 1.20.1
Operating System: Windows 11 (amd64) version 10.0
Java Version: 17.0.8, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 256185848 bytes (244 MiB) / 637534208 bytes (608 MiB) up to 2147483648 bytes (2048 MiB)
CPUs: 4
Processor Vendor: GenuineIntel
Processor Name: 11th Gen Intel(R) Core(TM) i3-1115G4 @ 3.00GHz
Identifier: Intel64 Family 6 Model 140 Stepping 1
Microarchitecture: Tiger Lake
Frequency (GHz): 3.00
Number of physical packages: 1
Number of physical CPUs: 2
Number of logical CPUs: 4
Graphics card #0 name: Intel(R) UHD Graphics
Graphics card #0 vendor: Intel Corporation (0x8086)
Graphics card #0 VRAM (MB): 1024.00
Graphics card #0 deviceId: 0x9a78
Graphics card #0 versionInfo: DriverVersion=30.0.101.1692
Memory slot #0 capacity (MB): 4096.00
Memory slot #0 clockSpeed (GHz): 3.20
Memory slot #0 type: DDR4
Memory slot #1 capacity (MB): 4096.00
Memory slot #1 clockSpeed (GHz): 3.20
Memory slot #1 type: DDR4
Virtual memory max (MB): 19255.30
Virtual memory used (MB): 10125.39
Swap memory total (MB): 11264.00
Swap memory used (MB): 497.00
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 10.0.9+10.0.9+main.dcd20f30
ModLauncher launch target: forgeclient
ModLauncher naming: srg
ModLauncher services:
mixin-0.8.5.jar mixin PLUGINSERVICE
eventbus-6.0.5.jar eventbus PLUGINSERVICE
fmlloader-1.20.1-47.2.0.jar slf4jfixer PLUGINSERVICE
fmlloader-1.20.1-47.2.0.jar object_holder_definalize PLUGINSERVICE
fmlloader-1.20.1-47.2.0.jar runtime_enum_extender PLUGINSERVICE
fmlloader-1.20.1-47.2.0.jar capability_token_subclass PLUGINSERVICE
accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE
fmlloader-1.20.1-47.2.0.jar runtimedistcleaner PLUGINSERVICE
modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE
modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE
FML Language Providers:
[email protected]
lowcodefml@null
javafml@null
Mod List:
client-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |COMMON_SET|Manifest: a1:d4:5e:04:4f:d3:d6:e0:7b:37:97:cf:77:b0:de:ad:4a:47:ce:8c:96:49:5f:0a:cf:8c:ae:b2:6d:4b:8a:3f
lootery-v2.jar |Lootery |mr_lootery |1-v2 |COMMON_SET|Manifest: NOSIGNATURE
dynamiclightsreforged-1.20.1_v1.6.0.jar |Rubidium Dynamic Lights |dynamiclightsreforged |1.20.1_v1.6.0 |COMMON_SET|Manifest: NOSIGNATURE
mixinextras-forge-0.2.0.jar |MixinExtras |mixinextras |0.2.0 |COMMON_SET|Manifest: NOSIGNATURE
geckolib-forge-1.20.1-4.4.2.jar |GeckoLib 4 |geckolib |4.4.2 |COMMON_SET|Manifest: NOSIGNATURE
architectury-9.2.14-forge.jar |Architectury |architectury |9.2.14 |COMMON_SET|Manifest: NOSIGNATURE
player-animation-lib-forge-1.0.2-rc11.20.jar |Player Animator |playeranimator |1.0.2-rc1+1.20 |COMMON_SET|Manifest: NOSIGNATURE
irons_spellbooks-1.20.1-3.1.3.jar |Iron's Spells 'n Spellbooks |irons_spellbooks |1.20.1-3.1.3 |COMMON_SET|Manifest: NOSIGNATURE
lootr-1.20-0.7.30.73.jar |Lootr |lootr |0.7.29.68 |ERROR |Manifest: NOSIGNATURE
cloth-config-11.1.118-forge.jar |Cloth Config v10 API |cloth_config |11.1.118 |COMMON_SET|Manifest: NOSIGNATURE
simplyswords-forge-1.55.0-1.20.1.jar |Simply Swords |simplyswords |1.55.0-1.20.1 |COMMON_SET|Manifest: NOSIGNATURE
bettercombat-forge-1.8.51.20.1.jar |Better Combat |bettercombat |1.8.5+1.20.1 |COMMON_SET|Manifest: NOSIGNATURE
caelus-forge-3.1.01.20.jar |Caelus API |caelus |3.1.0+1.20 |COMMON_SET|Manifest: NOSIGNATURE
forge-1.20.1-47.2.0-universal.jar |Forge |forge |47.2.0 |COMMON_SET|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
curios-forge-5.8.11.20.1.jar |Curios API |curios |5.8.1+1.20.1 |COMMON_SET|Manifest: NOSIGNATURE
Patchouli-1.20.1-84-FORGE.jar |Patchouli |patchouli |1.20.1-84-FORGE |COMMON_SET|Manifest: NOSIGNATURE
Xaeros_Minimap_24.1.1_Forge_1.20.jar |Xaero's Minimap |xaerominimap |24.1.1 |COMMON_SET|Manifest: NOSIGNATURE
XaerosWorldMap_1.38.4_Forge_1.20.jar |Xaero's World Map |xaeroworldmap |1.38.4 |COMMON_SET|Manifest: NOSIGNATURE
Crash Report UUID: 4db91a51-0c40-4b9a-b57f-60e47521a1f6
FML: 47.2
Forge: net.minecraftforge:47.2.0

It looks as though a configuration file has become corrupted. I'd recommend removing the lootr-common.toml and lootr-client.toml files and see if that fixes things.

How do i do that, exactly? i apologize for the inconvinience. but where do i access these files

Those should be in the config directory (the same folder that contains the mods folder also contains the config folder).

i did it, however, now i appear to not be able to access it as there are no more lootr common and client files anymore, since i deleted them both, do i install lootr again?

The files should automatically be created if they don't exist.

If you removed Lootr from the mods folder, you will need to install it again.

The problem is solved, thank you