Webgl build error (potential textmesh issue)

Hi All,

When I am trying to build my game in webgl I am getting build errors. I have had a look through the log and it looks like a textmesh issue, though I cannot be too sure.

See below the log:

 stdout:
 Running il2cpp.exe in server GC mode.
 IL2CPP error for type 'LevelDesigner' in D:\Dev\Unity\dungeon-diver\Assets\Scripts\Level Generator\LevelDesigner.cs:26
 Additional information: Exception has been thrown by the target of an invocation.
 il2cpp.exe didn't catch exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
  ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
  ---> System.InvalidOperationException: Unable to resolve a reference to the type 'UnityEngine.TextMesh' in the assembly 'Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'. Does this type exist in a different assembly in the project?
    at Unity.IL2CPP.GenericsCollection.Inflater.InflateType(GenericContext context, TypeReference typeReference)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.ProcessArray(PrimaryCollectionContext context, TypeReference elementType, Int32 rank)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.Visit(ArrayType arrayType, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodReference methodReference, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.Visit(Instruction instruction, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodBody methodBody, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodDefinition methodDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(TypeDefinition typeDefinition, Context context)
    --- End of inner exception stack trace ---
    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
    at Unity.Cecil.Visitor.Visitor.Visit[T](T node, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.ProcessGenericType(PrimaryCollectionContext context, GenericInstanceType type, InflatedCollectionCollector generics, GenericInstanceMethod contextMethod)
    at Unity.IL2CPP.GenericsCollection.GenericContextFreeVisitor.Visit(GenericInstanceType genericInstanceType, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(FieldDefinition fieldDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(TypeDefinition typeDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(ModuleDefinition moduleDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(AssemblyDefinition assemblyDefinition, Context context)
    --- End of inner exception stack trace ---
    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
    at Unity.Cecil.Visitor.Visitor.Visit[T](T node, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericsCollector.Collect(PrimaryCollectionContext context, ReadOnlyCollection`1 assemblies)
    at Unity.IL2CPP.AssemblyConversion.Steps.PrimaryCollectionSteps.GenericsCollection(PrimaryCollectionContext context, Boolean includeWindowsRuntimeTypeNames, ReadOnlyInflatedCollectionCollector& genericsCollectionCollector)
    at Unity.IL2CPP.AssemblyConversion.Phases.PrimaryCollectionPhase.Run(AssemblyConversionContext context, Boolean includeGenerics)
    at Unity.IL2CPP.AssemblyConversion.Classic.ClassicConverter.Run(AssemblyConversionContext context)
    at Unity.IL2CPP.AssemblyConversion.AssemblyConverter.ConvertAssemblies(AssemblyConversionInputData data, AssemblyConversionInputDataForMonoRuntime monoRuntimeData, AssemblyConversionParameters parameters, AssemblyConversionInputDataForTopLevelAccess dataForTopLevel)
    at il2cpp.Program.DoRun(String[] args, RuntimePlatform platform, BuildingOptions buildingOptions)
    at il2cpp.Program.Run(String[] args, Boolean setInvariantCulture)
    at il2cpp.Program.Main(String[] args)
 stderr:
 Unhandled exception. System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
  ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
  ---> System.InvalidOperationException: Unable to resolve a reference to the type 'UnityEngine.TextMesh' in the assembly 'Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'. Does this type exist in a different assembly in the project?
    at Unity.IL2CPP.GenericsCollection.Inflater.InflateType(GenericContext context, TypeReference typeReference)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.ProcessArray(PrimaryCollectionContext context, TypeReference elementType, Int32 rank)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.Visit(ArrayType arrayType, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodReference methodReference, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.Visit(Instruction instruction, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodBody methodBody, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(MethodDefinition methodDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(TypeDefinition typeDefinition, Context context)
    --- End of inner exception stack trace ---
    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
    at Unity.Cecil.Visitor.Visitor.Visit[T](T node, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericContextAwareVisitor.ProcessGenericType(PrimaryCollectionContext context, GenericInstanceType type, InflatedCollectionCollector generics, GenericInstanceMethod contextMethod)
    at Unity.IL2CPP.GenericsCollection.GenericContextFreeVisitor.Visit(GenericInstanceType genericInstanceType, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(FieldDefinition fieldDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(TypeDefinition typeDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(ModuleDefinition moduleDefinition, Context context)
    at Unity.Cecil.Visitor.Visitor.Visit(AssemblyDefinition assemblyDefinition, Context context)
    --- End of inner exception stack trace ---
    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
    at Unity.Cecil.Visitor.Visitor.Visit[T](T node, Context context)
    at Unity.IL2CPP.GenericsCollection.GenericsCollector.Collect(PrimaryCollectionContext context, ReadOnlyCollection`1 assemblies)
    at Unity.IL2CPP.AssemblyConversion.Steps.PrimaryCollectionSteps.GenericsCollection(PrimaryCollectionContext context, Boolean includeWindowsRuntimeTypeNames, ReadOnlyInflatedCollectionCollector& genericsCollectionCollector)
    at Unity.IL2CPP.AssemblyConversion.Phases.PrimaryCollectionPhase.Run(AssemblyConversionContext context, Boolean includeGenerics)
    at Unity.IL2CPP.AssemblyConversion.Classic.ClassicConverter.Run(AssemblyConversionContext context)
    at Unity.IL2CPP.AssemblyConversion.AssemblyConverter.ConvertAssemblies(AssemblyConversionInputData data, AssemblyConversionInputDataForMonoRuntime monoRuntimeData, AssemblyConversionParameters parameters, AssemblyConversionInputDataForTopLevelAccess dataForTopLevel)
    at il2cpp.Program.DoRun(String[] args, RuntimePlatform platform, BuildingOptions buildingOptions)
    at il2cpp.Program.Run(String[] args, Boolean setInvariantCulture)
    at il2cpp.Program.Main(String[] args)
 
   at UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) [0x000f5] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditorInternal.Runner.RunNetCoreProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) [0x0005d] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List`1[T] arguments, System.Action`1[T] setupStartInfo, System.String workingDirectory) [0x0007a] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (UnityEditor.Il2Cpp.Il2CppBuildPipelineData data, System.String outputDirectory, System.String workingDirectory, System.Boolean platformSupportsManagedDebugging) [0x0031a] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditorInternal.IL2CPPBuilder.Run () [0x000de] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) [0x0001c] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditor.WebGL.WebGlBuildPostprocessor.CompileBuild (UnityEditor.Modules.BuildPostProcessArgs args) [0x00108] in /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:373 
   at UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) [0x0029c] in /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:911 
   at UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) [0x00001] in <9ddd600ae5964fe0b21a870e08c53748>:0 
   at UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) [0x000dc] in <9ddd600ae5964fe0b21a870e08c53748>:0 
 UnityEditor.BuildPipeline:BuildPlayerInternalNoCheck(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, String[], Boolean)
 UnityEditor.DefaultBuildMethods:BuildPlayer(BuildPlayerOptions)
 UnityEditor.BuildPlayerWindow:CallBuildMethods(Boolean, BuildOptions)
 UnityEditor.BuildPlayerWindow:BuildPlayerAndRun(Boolean)
 UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

I am using the latest version of unity and am using the URP (2d)

any help would be appreciated,

Many Thanks