我试着这样做: let fileUrl = NSURL(string: "https://developer.apple.com/augmented-reality/quick-look/models/}
}) 但是它不能正常工作并抛出错误Failed to open scene 'https://developer.apple.com/augmented-reality
an AR Project--> obj-model=”obj: url(https://rishavjayswal.github.io/augmented-reality/resources/couch.obj);
mtl: url(https://rishavjayswal.github.io/augmented-reality/resources