Can't build with Webgl.

[Jeongguk]

Can't build with Webgl.
Standalone builds fine.
using Unity3D 2021.3.5f1.
getting the following error:

C:\Program Files\Unity\Hub\Editor\2021.3.5f1\Editor\Data\il2cpp\build\deploy\il2cpp.exe --convert-to-cpp --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/Assembly-CSharp.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/Dracodec.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/Mono.Security.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/mscorlib.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/Newtonsoft.Json.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/Siccity.GLTFUtility.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Configuration.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Core.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Data.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Numerics.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Runtime.Serialization.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Xml.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/System.Xml.Linq.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.AnimationModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.AudioModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.CoreModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.ImageConversionModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.SharedInternalsModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.UnityWebRequestModule.dll --assembly=Library/Bee/artifacts/WebGL/ManagedStripped/UnityEngine.UnityWebRequestTextureModule.dll --data-folder=C:/Project/UnitySample/GLTF_Test/Library/Bee/artifacts/WebGL/il2cppOutput/data --generatedcppdir=C:/Project/UnitySample/GLTF_Test/Library/Bee/artifacts/WebGL/il2cppOutput/cpp --emit-method-map --generics-option=None,EnableFullSharing --dotnetprofile=unityaot-linux --profiler-report --profiler-output-file=C:/Project/UnitySample/GLTF_Test/Library/Bee/artifacts/il2cpp_conv_f9sc.traceevents --print-command-line
Error: IL2CPP error for type 'System.Net.WebHeaderCollection/RfcChar' in assembly 'C:\Project\UnitySample\GLTF_Test\Library\Bee\artifacts\WebGL\ManagedStripped\System.dll'
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')
at Unity.IL2CPP.CodeWriters.ChunkedMemoryStream.Seek(Int64 offset, SeekOrigin origin)
at Unity.IL2CPP.CodeWriters.InMemoryGeneratedMethodCodeWriter.Write(IGeneratedMethodCodeStream other)
at Unity.IL2CPP.SourceWriters.SourceWriterBase2.FlushStream(GlobalWriteContext context, IGeneratedMethodCodeStream stream, NPath filePath) at Unity.IL2CPP.Contexts.Scheduling.Streams.FileLevelParallelStreamManager3.WorkerWriteItemsToFile(WorkItemData2 data) at Unity.IL2CPP.Contexts.Scheduling.PhaseWorkScheduler1.WorkerLoop(Object data)
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

[Maadhav Sharma]

@JeongGukAn Were you able to fix the issue? I am also facing the same issue

[Jeongguk]

There is a newtonjson bug in the 2021 version. It works fine in 2020 version.

[Maximilian Engel]

Any fix for this yet?

[Dominik S]

I'm using Unity 2022.1.20 and the bug still exists. Is there anybody who has found a solution or workaround?