参数"documentPath“的值不是有效的资源路径。Firebase云函数

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.myFunction = functions.https.onRequest(async (req, res) => {
  const documentPath = req.query.documentPath;

  // 验证路径格式
  if (!documentPath || !documentPath.startsWith('collection/')) {
    return res.status(400).send('Invalid document path');
  }

  try {
    const docRef = admin.firestore().doc(documentPath);
    const doc = await docRef.get();

    if (!doc.exists()) {
      return res.status(404).send('Document does not exist');
    }

    res.status(200).send(doc.data());
  } catch (error) {
    res.status(500).send(error);
  }
});