Pourquoi ma fonction cloud continuer à donner un message d'erreur (CloudFirestore avec ForOf Boucle)?

Ma fonction getDocuments() en résumé, consiste dans le fait que je passe quelques paramètres dans un tableau (comme le chemin d'accès, le nom du document, si je veux de l'article par les parties) et, d'après ce tableau, j'retourner le contenu de chaque document par le biais d'une boucle (ForOf), la fonction que j'ai faites plus que rien à me mettre trop de lignes de code, le problème est qu'il jette toujours moi une erreur que je ne sais pas ce que c'est.

Pouvez-vous m'aider? Merci

Fonction Cloud

export const employees = functions.https.onRequest((request, response) => {
corsHandler(request, response, async () => {
    return await security.securityLayer(
        { _definedMethod: "GET", userValue: request.method },
        { _definedType: true, _definedLevel: [4], _definedSeconds: 12, userToken: request.header("_token") },
        { required: false },
        { required: false }
    ).then(async (answer) => {
        if (answer.status === 400 || answer.status === 401) {
            return response.status(answer.status).send(answer);
        }

        return await security.getDocuments([
            { collection: "Core/", documentName: "Centers", options: { idReturn: "centros", nestedProperties: [] } },
            {
                collection: "Core/", documentName: "Employees", options: {
                    idReturn: "personal",
                    nestedProperties: [
                          { idReturn: "employees", name: "employee" },
                          { idReturn: "submanager", name: "submanager" },
                          { idReturn: "manager", name: "manager" }
                     ],
                },
            },
        ], SPECIAL_CODE).then((documents) => response.status(documents.status).send(documents))
            .catch(() => response.status(500).send(security.error500(SPECIAL_CODE, 2)));
    }).catch(() => response.status(500).send(security.error500("SPECIAL_CODE", 1)));
});
});

fonction async

export async function getDocuments(
documents: {
    collection: string,
    documentName: string,
    options: {
        idReturn: string,
        nestedProperties: {
            idReturn: string,
            name: string
        }[]
    }
}[],
code: string):
Promise<{ status: 201, code: string, subcode: number, devDescription: string, data: any }> {
const data: any = {};
const response: { devDescription: string, subcode: number } = { devDescription: "The document was found and retrieved successfully.", subcode: 1 };

if (documents.length > 1) {
    response.devDescription = "Documents were found and obtained successfully.";
    response.subcode = 2;
}

for (const iterator of documents) {
    const docRef = { path: iterator.collection, name: iterator.documentName };
    const options = { id: iterator.options.idReturn, nestedProperties: iterator.options.nestedProperties };
    const doc = await database.collection(docRef.path).doc(docRef.name).get();

    if (!doc.exists) {
        data[options.id] = "The document " + docRef.name + " does not exist in the specified path: " + docRef.path;

        if (documents.length === 1) {
            response.devDescription = "The document was not found. Check the DATA for more information.";
            response.subcode = 3;
        } else {
            response.devDescription = "One, several or all documents were not found. Check the DATA for more information.";
            response.subcode = 3;
        }
    } else {
        const docData: any = doc.data();
        if (options.nestedProperties.length === 0) {
            data[options.id] = docData;
        } else {
            for (const nested of options.nestedProperties) {
                data[options.id][nested.idReturn] = _.get(docData, nested.name);
            }
        }
    }
}

return { status: 201, code: code, subcode: response.subcode, devDescription: response.devDescription, data: data };
}