我正在尝试在libgdx中加载3d模型，但这会给我以下错误：
Exception in thread "LWJGL Application" com.badlogic.gdx.utils.SerializationException: Error parsing file: model.g3db
at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:56)
at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.parseModel(G3dModelLoader.java:65)
at com.badlogic.gdx.graphics.g3d.loader.G3dModelLoader.loadModelData(G3dModelLoader.java:61)
at com.badlogic.gdx.assets.loaders.ModelLoader.loadModel(ModelLoader.java:53)
at com.badlogic.gdx.assets.loaders.ModelLoader.loadModel(ModelLoader.java:69)
at com.xploor.animation.MyGdxGame.create(MyGdxGame.java:41)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:149)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)
Caused by: com.badlogic.gdx.utils.GdxRuntimeException: File not found: model.g3db (Internal)
at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:136)
at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:151)
at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:54)
... 7 more
Process finished with exit code 0