MTLLoader 报 Handlers.get() has been removed. Use LoadingManager.getHandler() instead 错误处理
使用Three.js加载外部模型(OBJ,JSON...等格式的模型文件)。上代码:yarnaddthree//three.js核心模块yarnaddthree-obj-mtl-loader//材质及模型加载器使用:import*asTHREEfrom'three'//THREE基础库import{OBJLoader,MTLLoader}from'three-obj-mtl-loader'//TH