最近好多人问啊,私信里三分之二都在问这个。

正文开始:
// I bet Cylons wouldn't have this problem. Time: 2/20/22 11:03 AM Description: Updating screen events 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) [省略...] 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.minecraft.client.gui.GuiCreateWorld.func_146284_a(GuiCreateWorld.java:224) [省略...] -- Affected screen -- Details: Screen name: com.bloodnbonesgaming.loadingscreens.client.gui.override.GuiWorkingOverride Stacktrace: at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1759) [省略...] -- System Details -- Details: Minecraft Version: 1.12.2 [省略...] FML: MCP 9.42 Powered by Forge 14.23.5.2860 169 mods loaded, 169 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 | |:------ |:--------------------------- |:-------------------- |:------------------------------------------------------------ |:---------------------------------------- | | LCHIJA | minecraft | 1.12.2 | minecraft.jar | None | | LCHIJA | mcp | 9.42 | minecraft.jar | None | [省略...] | LCHIJA | librarianliblate | 4.22 | librarianlib-1.12.2-4.22.jar | None | Loaded coremods (and transformers): [省略...] - InspirationsShared (Enabled/Forced) [省略...] RLTweaker Error Report: Launched Version: RLCraft LWJGL: 2.9.4 OpenGL: GeForce GTX 1650/PCIe/SSE2 GL version 4.6.0 NVIDIA 457.49, NVIDIA Corporation GL Caps: Using GL 1.3 multitexturing. [省略...] CPU: 12x Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz 为节约空间修改了部分字节
一开始我上网查,结果嘛,貌似是跟玩家在服务器之类的地方的验证出错会出现,慢慢地就想到了是UUID的问题。但貌似还不能解决问题,网上也有人说得用其它的启动器启动才可,这才解决问题。
然后小粉丝问能不能解决下拔刀剑认不了主的问题,我试着去把PCL2生成的UUID插到HMCL启动器,呜呼,同样的问题出现了。这下我知道UUID是真的问题所在。
在万能的百科群群友的帮助下,找到了原因。PCL2传入mojang账号API的uuid不规范,以前可以通过检验,但现在mojang更新了API,通过不了了。
解决方案:(解决方案无先后排序)
1.更换除PCL2外的其他启动器。
2.PCL2作者已经更新了新版本,更新PCL2启动器到最新版本。
这里链一个PCL2作者的官宣:

要注意的是,PCL开发者说更新新版本会让背包清除,本人没有尝试过,但据我的小小经验,在单人存档内背包*应该不会*被清除,但在服务器中有*极大可能性*会被清除。
同时由于使用了新的UUID,像拔刀剑、宝可梦模组中有UUID判断认主机制的模组会比较麻烦,可能需要像NBTexplorer这类软件来修改回现有的UUID。(拔刀剑貌似放一次在地上再捡起来就好了?)