There is a runtime issue at least on my x86_64 ubuntu 18.04 machine:
Multiple plugins with the same name 'dracodec_unity' (found at 'Packages/io.conix.arena.unity/Runtime/ThirdParty/GLTFUtility/Plugins/draco/Plugin/Android/armeabi-v7a/libdracodec_unity.so' and 'Packages/io.conix.arena.unity/Runtime/ThirdParty/GLTFUtility/Plugins/draco/Plugin/Android/arm64-v8a/libdracodec_unity.so'). That means one or more plugins are set to be compatible with Editor. Only one plugin at the time can be used by Editor.
There is a runtime issue at least on my x86_64 ubuntu 18.04 machine:
Multiple plugins with the same name 'dracodec_unity' (found at 'Packages/io.conix.arena.unity/Runtime/ThirdParty/GLTFUtility/Plugins/draco/Plugin/Android/armeabi-v7a/libdracodec_unity.so' and 'Packages/io.conix.arena.unity/Runtime/ThirdParty/GLTFUtility/Plugins/draco/Plugin/Android/arm64-v8a/libdracodec_unity.so'). That means one or more plugins are set to be compatible with Editor. Only one plugin at the time can be used by Editor.