estoy recibiendo este error

 error is here: Error: Value for argument "value" is not a valid query constraint. Cannot use "undefined" as a Firestore value. If you want to ignore undefined values, enable `ignoreUndefinedProperties`.

en mi función javascript de Firebase y no tengo idea de cómo resolverlo. Descubrí que en mecanografiado ocurre este error. Pero, ¿qué significa este error en javascript?

esta es mi funcion

 import * as functions from "firebase-functions"; import admin from "firebase-admin"; import { deleteCollection, deleteQuery, deleteUserData, } from "../utils/deletion"; export default functions.firestore .document("deletions/{userUid}") .onDelete(async (snap, context) => { const db = admin.firestore(); const { userUid } = context.params; const { uid } = userUid; //dont forget to delete storage files try { await db.doc(`deletions/${userUid}/meinprofilsettings/${uid}`).delete(); await deleteQuery(db, db.collection(`deletions/${userUid}/videos`).where("uid", "==", uid));

La línea es await deleteQuery...

Las funciones deleteQuery se ven así

 async function deleteQuery(db, query, batchSize = 100) { const q = query.limit(batchSize); return new Promise((resolve, reject) => { deleteQueryBatch(db, q, resolve).catch(reject); }); } async function deleteQueryBatch(db, query, resolve) { const snapshot = await query.get(); const batchSize = snapshot.size; if (batchSize === 0) { // When there are no documents left, we are done resolve(); return; } // Delete documents in a batch const batch = db.batch(); snapshot.docs.forEach((doc) => { batch.delete(doc.ref); }); await batch.commit(); // Recurse on the next process tick, to avoid // exploding the stack. process.nextTick(() => { deleteQueryBatch(db, query, resolve); }); }