Can't find generated.h during Html5 launch

Hey,
i have a project where i am using the ProceduralMeshComponent. I have included it in my build.cs in the PrivateDependencyModuleNames and in the uproject file as a AdditionalDependency. I can compile my project in Visual Studio, in Unreal and i can start playing. Now i want to launch my project as Html5 and i get the follwing error message:

In file included from C:/ 4.16/Source/RobCogWeb/Private/RCutting.cpp:4:
LogPlayLevel: UnrealBuildTool:   D:\UE_4.16\Engine\Plugins\Runtime\ProceduralMeshComponent\Source\ProceduralMeshComponent\Public\ProceduralMeshComponent.h(10,10): error: 'ProceduralMeshComponent.generated.h' file not found
LogPlayLevel: UnrealBuildTool: ../Plugins/Runtime/ProceduralMeshComponent/Source/ProceduralMeshComponent/Public/ProceduralMeshComponent.h:10:10: fatal error: 'ProceduralMeshComponent.generated.h' file not found
LogPlayLevel: UnrealBuildTool: #include "ProceduralMeshComponent.generated.h"

Did i forget some other include or why do i get this error?