I implemented the code below and it works perfectly fine when I run it in on local machine with npm start

However, when I deploy it on Firebase, the sendOrderEmail function doesn't work.

I don't even get any logs.

const functions = require("firebase-functions");
const admin = require("firebase-admin");
const {email, password} = require('./config');
const nodemailer = require('nodemailer');
const htmlToText = require('nodemailer-html-to-text').htmlToText;

admin.initializeApp();

const mailTransport = nodemailer.createTransport({
    service: 'gmail',
    auth: {
        user: email,
        pass: password
    }
});

mailTransport.use("compile", htmlToText());

const APP_NAME = 'the.Travelest';

exports.sendUserEmail = functions.database
    .ref("/lettersRequest/{pushId}")
    .onCreate(request => {
        return sendOrderEmail(request.val().email);
    });

async function sendOrderEmail(email){
        const mailOptions = {
            from: `${APP_NAME}`,
            to: email,
            subject: `Your order from ${APP_NAME}`,
            html: `
                <div>
                    <strong> Hello </strong>
                    World
                </div>
            `
        };
        return await mailTransport.sendMail(mailOptions);
    }

UPDATE After checking the logic, I believe that I've found the issues in another place.

So, the logic is - when I click on SUBMIT in form, I send the data to Firebase Runtime Database. And this action triggers the function above and send the email.

However, the SUBMIT button doesn't trigger the process it should trigger. I don't see even console.log result in the console, when I click on SUBMIT Again, it works locally, when I run nom start

Here is the submit handler:

const handleSubmit = event => {
        event.preventDefault();

        setErrors(validate(values))
        setIsSubmitting(true)

        try{
            const newRequestRef = database.ref('lettersRequest').push();
            const newRequest = {
                country: values.country,
                travelersAmount: values.travelersAmount,
                introExtro: values.introExtro,
                comments: values.comments,
                email: values.email,
                phone: values.phone
            };
            newRequestRef.set({
                email: values.email,
                request: newRequest
            });
            console.log("no error")
        }catch(e){
            console.log("error")
        }
    }