https://developers.weixin.qq.com/miniprogram/dev/component/xr-frame/render/camera.html [图片]

我用vue3 & uniapp开发xr-frame项目，引用示例里面的xr-ar-2dmarker，在开发中工具中预览成这个样子，请问这个是什么问题，如何解决！ [图片] 附上代码： <xr-scene ar-system="modes:Marker" id="xr-scene" bind:ready="handleReady" bind:ar-ready="handleARReady" bind:ar-error="handleARError">   <xr-assets bind:progress="handleAssetsProgress" bind:loaded="handleAssetsLoaded">     <xr-asset-load type="gltf" asset-id="gltf" src="https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/butterfly/index.glb" />   </xr-assets>   <xr-env env-data="xr-frame-team-workspace-day" />   <xr-node wx:if="{{arReady}}">     <xr-ar-tracker mode="Marker" src="{{markerImg}}">       <xr-gltf model="gltf" binde:tick="handleTick(1)" anim-autoplay position="0.2 0 -0.2" scale="0.6 0.6 0.6" rotation="0 -50 0" />       <xr-gltf model="gltf" binde:tick="handleTick(2)" anim-autoplay position="0.4 0 0.3" scale="0.5 0.5 0.5" rotation="0 -50 0" />       <xr-gltf model="gltf" binde:tick="handleTick(3)" anim-autoplay position="-0.3 0 0.3" scale="0.4 0.4 0.4" rotation="0 -50 0" />     </xr-ar-tracker>     <xr-camera       id="camera" node-id="camera" position="0.8 2.2 -5" clear-color="0.925 0.925 0.925 1"       background="ar" is-ar-camera     ></xr-camera>   </xr-node>   <xr-node node-id="lights">     <xr-light type="ambient" color="1 1 1" intensity="1" />     <xr-light type="directional" rotation="180 0 0" color="1 1 1" intensity="3" />   </xr-node> </xr-scene>