Hi team,
First of all, many thanks to your glTFRuntime plugin.
Recently, I downloaded and tried compiling it in Unreal Engine 4.27.
It has compile error in glTFRuntimeParserStaticMeshes.cpp and I moved error line:
VertexInstanceUVs.SetNumChannels(NumUVs);
into ENGINE_MAJOR_VERSION > 4 macro block.
Please patch this one line code fix.

By the way, I am a C++ developer in 3D graphics engine, but a newbie using GIT (github).
I uploaded my project using glTFRuntime. https://github.com/odyssey2010/unreal_gltf_runtime_scene
If any question, please contact me a.kyungdong.park@gmail.com
Thanks and Best regards.