java.lang.IllegalArgumentException: Name and ID cannot both be blank
at com.mojang.authlib.GameProfile.<init>(GameProfile.java:26)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:186)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:173)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2421)
at net.minecraftforge.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:734)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_186777_e(GuiListWorldSelectionEntry.java:249)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_186774_a(GuiListWorldSelectionEntry.java:199)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_148278_a(GuiListWorldSelectionEntry.java:163)
at net.minecraft.client.gui.GuiListExtended.func_148179_a(SourceFile:41)
at net.minecraft.client.gui.GuiWorldSelection.func_73864_a(SourceFile:117)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:533)
at net.minecraft.client.gui.GuiWorldSelection.func_146274_d(SourceFile:49)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:501)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1759)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1098)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Client thread
Stacktrace:
at com.mojang.authlib.GameProfile.<init>(GameProfile.java:26)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:186)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:173)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2421)
at net.minecraftforge.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:734)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_186777_e(GuiListWorldSelectionEntry.java:249)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_186774_a(GuiListWorldSelectionEntry.java:199)
at net.minecraft.client.gui.GuiListWorldSelectionEntry.func_148278_a(GuiListWorldSelectionEntry.java:163)
at net.minecraft.client.gui.GuiListExtended.func_148179_a(SourceFile:41)
at net.minecraft.client.gui.GuiWorldSelection.func_73864_a(SourceFile:117)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:533)
at net.minecraft.client.gui.GuiWorldSelection.func_146274_d(SourceFile:49)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:501)
-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiScreenWorking
Stacktrace:
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1759)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1098)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_301, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1510847016 bytes (1440 MB) / 2657091584 bytes (2534 MB) up to 3865051136 bytes (3686 MB)
JVM Flags: 6 total; -XX:+UseG1GC -XX:-UseAdaptiveSizePolicy -XX:-OmitStackTraceInFastThrow -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmn256m -Xmx3686m
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP 9.42 Powered by Forge 14.23.5.2860 Optifine OptiFine_1.12.2_HD_U_G5 28 mods loaded, 28 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
Launched Version: 1.12.2-Forge 14.23.5.2860-OptiFine_G5
LWJGL: 2.9.4
OpenGL: GeForce GTX 1050/PCIe/SSE2 GL version 4.6.0 NVIDIA 456.71, NVIDIA Corporation
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.