WHAT?.. Is it an error?

Status
Fixed
Issue description

When I tried to launch Minecraft Client I got this:

Executing gradle command: runClient
Build info: MCreator 1.8.2, 64-bit, 3983 MB, Windows 10 - cmd, JVM 1.8.0_192, JAVA_HOME: C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\.\jdk
C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\forge>gradlew -Dorg.gradle.daemon=false -Dorg.gradle.parallel=false -Dorg.gradle.jvmargs="-Xms625m -Xmx2803m" runClient 
Daemon will be stopped at the end of the build stopping after processing
This mapping 'snapshot_20171003' was designed for MC 1.12! Use at your own peril.
#################################################
         ForgeGradle 2.3-SNAPSHOT-7764e3e        
  https://github.com/MinecraftForge/ForgeGradle  
#################################################
                 Powered by MCP                  
             http://modcoderpack.com             
     by: Searge, ProfMobius, R4wk, ZeuX          
     Fesh0r, IngisKahn, bspkrs, LexManos         
#################################################
:deobfCompileDummyTask
:deobfProvidedDummyTask
:sourceApiJava UP-TO-DATE
:compileApiJava NO-SOURCE
:processApiResources NO-SOURCE
:apiClasses UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:jar
:getVersionJson
:extractNatives SKIPPED
:extractUserdev UP-TO-DATE
:getAssetIndex UP-TO-DATE
:getAssets
Current status: 33/1305   2%
Current status: 99/1305   7%
Current status: 179/1305   13%
Current status: 323/1305   24%
Current status: 441/1305   33%
Current status: 575/1305   44%
Current status: 676/1305   51%
Current status: 796/1305   60%
Current status: 944/1305   72%
Current status: 1058/1305   81%
Current status: 1060/1305   81%
Current status: 1060/1305   81%
Current status: 1060/1305   81%
Current status: 1061/1305   81%
Current status: 1061/1305   81%
Current status: 1062/1305   81%
Current status: 1066/1305   81%
Current status: 1073/1305   82%
Current status: 1077/1305   82%
Current status: 1083/1305   82%
Current status: 1136/1305   87%
Current status: 1179/1305   90%
Current status: 1264/1305   96%
:makeStart
:runClient
18:25.18 [main/INFO] [GradleStart]: Extra: []
18:25.18 [main/INFO] [GradleStart]: Running with arguments: [--userProperties, {}, --assetsDir, C:/Users/Admin/.mcreator/gradle/caches/minecraft/assets, --assetIndex, 1.12, --accessToken{REDACTED}, --version, 1.12.2, --tweakClass, net.minecraftforge.fml.common.launcher.FMLTweaker, --tweakClass, net.minecraftforge.gradle.tweakers.CoremodTweaker]
18:25.18 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
18:25.19 [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
18:25.19 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.gradle.tweakers.CoremodTweaker
18:25.19 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
18:25.19 [main/INFO] [FML]: Forge Mod Loader version 14.23.5.2768 for Minecraft 1.12.2 loading
18:25.19 [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_192, running on Windows 10:amd64:10.0, installed at C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\jdk\jre
18:25.19 [main/ERROR] [FML]: Apache Maven library folder was not in the format expected. Using default libraries directory.
18:25.19 [main/ERROR] [FML]: Full: C:\Users\Admin\.mcreator\gradle\caches\modules-2\files-2.1\org.apache.maven\maven-artifact\3.5.3\7dc72b6d6d8a6dced3d294ed54c2cc3515ade9f4\maven-artifact-3.5.3.jar
18:25.19 [main/ERROR] [FML]: Trimmed: c:/users/Admin/.mcreator/gradle/caches/modules-2/files-2.1/org.apache.maven/maven-artifact/3.5.3/
18:25.19 [main/INFO] [FML]: Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation
18:25.19 [main/INFO] [FML]: Detected deobfuscated environment, loading log configs for colored console logs.
2019-03-17 18:25:22,754 main WARN Disabling terminal, you're running in an unsupported environment.
18:25.22 [main/INFO] [FML]: Ignoring missing certificate for coremod FMLCorePlugin (net.minecraftforge.fml.relauncher.FMLCorePlugin), we are in deobf and it's a forge core plugin
18:25.22 [main/INFO] [FML]: Ignoring missing certificate for coremod FMLForgePlugin (net.minecraftforge.classloading.FMLForgePlugin), we are in deobf and it's a forge core plugin
18:25.22 [main/INFO] [FML]: Searching C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\forge\run\.\mods for mods
18:25.22 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.gradle.tweakers.CoremodTweaker
18:25.22 [main/INFO] [GradleStart]: Injecting location in coremod net.minecraftforge.fml.relauncher.FMLCorePlugin
18:25.22 [main/INFO] [GradleStart]: Injecting location in coremod net.minecraftforge.classloading.FMLForgePlugin
18:25.22 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
18:25.22 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
18:25.22 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.gradle.tweakers.AccessTransformerTweaker
18:25.22 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
18:25.22 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
18:25.22 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
18:25.25 [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing
18:25.25 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
18:25.25 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
18:25.26 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.gradle.tweakers.AccessTransformerTweaker
18:25.26 [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
18:25.26 [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
18:25.26 [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
18:25.28 [main/INFO] [minecraft/Minecraft]: Setting user: Player965
18:25.36 [main/WARN] [minecraft/GameSettings]: Skipping bad option: lastServer:
18:25.37 [main/INFO] [minecraft/Minecraft]: LWJGL Version: 2.9.4
18:25.38 [main/INFO] [FML]: -- System Details --
Details:
   Minecraft Version: 1.12.2
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_192, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 40701512 bytes (38 MB) / 274726912 bytes (262 MB) up to 928514048 bytes (885 MB)
   JVM Flags: 0 total; 
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML: 
   Loaded coremods (and transformers): 
   GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4531' Renderer: 'Intel(R) HD Graphics 405'
18:25.39 [main/INFO] [FML]: MinecraftForge v14.23.5.2768 Initialized
18:25.39 [main/INFO] [FML]: Starts to replace vanilla recipe ingredients with ore ingredients.
18:25.39 [main/INFO] [FML]: Replaced 1036 ore ingredients
18:25.41 [main/INFO] [FML]: Searching C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\forge\run\.\mods for mods
18:25.42 [Thread-3/INFO] [FML]: Using alternative sync timing : 200 frames of Display.update took 1208729500 nanos
18:25.46 [main/INFO] [FML]: Forge Mod Loader has identified 5 mods to load
18:25.47 [main/INFO] [FML]: Attempting connection with missing mods [minecraft, mcp, FML, forge, trollu] at CLIENT
18:25.47 [main/INFO] [FML]: Attempting connection with missing mods [minecraft, mcp, FML, forge, trollu] at SERVER
18:25.51 [main/INFO] [minecraft/SimpleReloadableResourceManager]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:= I Troll U =
18:25.52 [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:629 ---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!
Time: 3/17/19 6:25 PM
Description: Initializing game
java.lang.ExceptionInInitializerError
   at mod.mcreator.trollu.(trollu.java:256)
   at java.lang.Class.forName0(Native Method)
   at java.lang.Class.forName(Class.java:348)
   at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:528)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
   at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
   at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
   at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
   at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
   at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
   at com.google.common.eventbus.EventBus.post(EventBus.java:217)
   at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
   at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
   at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
   at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
   at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
   at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
   at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
   at com.google.common.eventbus.EventBus.post(EventBus.java:217)
   at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
   at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:232)
   at net.minecraft.client.Minecraft.init(Minecraft.java:513)
   at net.minecraft.client.Minecraft.run(Minecraft.java:421)
   at net.minecraft.client.main.Main.main(Main.java:118)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
   at GradleStart.main(GradleStart.java:25)
Caused by: java.lang.NullPointerException: Can't use a null-name for the registry, object mod.mcreator.mcreator_trollSappling$ItemCustom@4fa9533f.
   at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:864)
   at net.minecraftforge.registries.ForgeRegistry.add(ForgeRegistry.java:295)
   at net.minecraftforge.registries.ForgeRegistry.add(ForgeRegistry.java:289)
   at net.minecraftforge.registries.ForgeRegistry.register(ForgeRegistry.java:122)
   at mod.mcreator.mcreator_trollSappling$ItemCustom.(mcreator_trollSappling.java:35)
-> Jump to the exception line
   at mod.mcreator.mcreator_trollSappling.(mcreator_trollSappling.java:17)
-> Jump to the exception line
   ... 46 more
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Client thread
Stacktrace:
   at mod.mcreator.trollu.(trollu.java:256)
   at java.lang.Class.forName0(Native Method)
   at java.lang.Class.forName(Class.java:348)
   at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:528)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
   at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
   at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
   at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
   at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
   at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
   at com.google.common.eventbus.EventBus.post(EventBus.java:217)
   at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
   at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
   at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
   at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
   at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
   at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
   at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
   at com.google.common.eventbus.EventBus.post(EventBus.java:217)
   at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
   at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:232)
   at net.minecraft.client.Minecraft.init(Minecraft.java:513)
-- Initialization --
Details:
Stacktrace:
   at net.minecraft.client.Minecraft.run(Minecraft.java:421)
   at net.minecraft.client.main.Main.main(Main.java:118)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
   at GradleStart.main(GradleStart.java:25)
-- System Details --
Details:
   Minecraft Version: 1.12.2
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_192, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 149707888 bytes (142 MB) / 367001600 bytes (350 MB) up to 928514048 bytes (885 MB)
   JVM Flags: 0 total; 
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML: MCP 9.42 Powered by Forge 14.23.5.2768 5 mods loaded, 5 mods active
   States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
   | State | ID        | Version      | Source                           | Signature |
   |:----- |:--------- |:------------ |:-------------------------------- |:--------- |
   | UC    | minecraft | 1.12.2       | minecraft.jar                    | None      |
   | UC    | mcp       | 9.42         | minecraft.jar                    | None      |
   | UC    | FML       | 8.0.99.99    | forgeSrc-1.12.2-14.23.5.2768.jar | None      |
   | UC    | forge     | 14.23.5.2768 | forgeSrc-1.12.2-14.23.5.2768.jar | None      |
   | U     | trollu    | 2.0.1        | modid-1.0.jar                    | None      |
   Loaded coremods (and transformers): 
   GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4531' Renderer: 'Intel(R) HD Graphics 405'
   Launched Version: 1.12.2
   LWJGL: 2.9.4
   OpenGL: Intel(R) HD Graphics 405 GL version 4.4.0 - Build 20.19.15.4531, Intel
   GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.
   Using VBOs: Yes
   Is Modded: Definitely; Client brand changed to 'fml,forge'
   Type: Client (map_client.txt)
   Resource Packs: 
   Profiler Position: N/A (disabled)
   CPU: 4x Intel(R) Pentium(R) CPU N3710 @ 1.60GHz
18:25.52 [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:629 #@!@# Game crashed! Crash report saved to: #@!@# C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\forge\run\.\crash-reports\crash-2019-03-17_18.25.52-client.txt
:runClient FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':runClient'.
> Process 'command 'C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\jdk\bin\java.exe'' finished with non-zero exit value -1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 2m 8s
13 actionable tasks: 7 executed, 6 up-to-date
C:\Users\Admin\Downloads\MCreator 1.8.2 [1.12.2] Windows 64bit\forge>
Task completed with return code 0 in 129235 milliseconds

What???

Is this an error???

P.S. When I exported my mod and copied it to .minecraft/mods I saw it again...

Issue comments

What caused this when your computer is on "sleep?" while loading the runclient, You know, when you don't turn your mouse for a few minutes(ps: mine is 2min) your computer is on sleep so Don't Let the runclient load while not touching mouse