问题可能是由于缺少访问BIM360存储的权限所致。请尝试使用以下代码示例来授权BIM360存储的访问权限：

const token = ''; // Your access token here const urn = ''; // Your model URN here const projectId = ''; // Your BIM 360 project ID here const folderId = ''; // Your folder ID here const objectId = ''; // Your object ID here

async function authorizeAccessToken() { try { const authorization = await fetch(https://developer.api.autodesk.com/authorization/v1/access_token, { method: 'POST', headers: { 'Authorization': Bearer ${token} } });

const data = await authorization.json();

return data.access_token;

} catch (err) { console.error(err); throw new Error(err); } }

async function authorizeBucketAccess(accessToken) { try { const authorization = await fetch(https://developer.api.autodesk.com/oss/v2/buckets/${projectId}/policy?key=${folderId}/${objectId}, { method: 'POST', headers: { 'Authorization': Bearer ${accessToken} }, body: JSON.stringify({ 'access': 'full', 'expiresInMinutes': 60 }) });

const data = await authorization.json();

return authorization.status === 200;

} catch (err) { console.error(err); throw new Error(err); } }

async function checkSVF2View(accessToken) { try { const view = await fetch(https://developer.api.autodesk.com/modelderivative/v2/designdata/${urn}/metadata, { method: 'GET', headers: { 'Authorization': Bearer ${accessToken} } });

const data = await view.json();

return data.metadata && data.metadata.length > 0 && data.metadata[0].derivatives.some(derivative => derivative.outputType === 'svf' && derivative.children.some(child => child.type === 'geometry' && child.role