Every time I run 'firebase deploy' I get this error message:

Error: Failed to load function definition from source: Failed to generate manifest from function source: Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: No "exports" main defined in /Users/ghaith/Desktop/FacilityManagement/fm_back/functions/node_modules/firebase/package.json

I've tried reinstalling npm modules, I updated everything as well!

const functions = require("firebase-functions");
const admin = require("firebase-admin");
const app = require("express")();
admin.initializeApp();

const config = {...};

const firebase = require("firebase");
firebase.initializeApp(config);

app.get("/requests", (req, res) => {
    admin
        .firestore()
        .collection("requests")
        .orderBy("createdAt", "desc")
        .get()
        .then((data) => {
            let requests = [];
            data.forEach((doc) => {
                requests.push({
                    requestID: doc.id,
                    fname: doc.data().fname,
                    email: doc.data().email,
                    desc: doc.data().desc,
                    issue: doc.data().issue,
                    address: doc.data().address,
                });
            });
            return res.json(requests);
        })
        .catch((err) => console.error(err));
});
exports.api = functions.https.onRequest(app);