Get current user email and add to collection

Hi guys. Have the same problem and cannot solve it: required data is shown in the text input field, but data is not submitted to the collection when the button is pressed. PLease advise what do I do wrong.

import wixUsers from 'wix-users';
import wixData from 'wix-data';

let user = wixUsers.currentUser;
let userId = user.id;   

 user.getEmail()
    .then( (email) => {
 let userEmail = email;
        wixData.query("Members/PublicData")
            .eq("_id", userId)
            .find()
            .then((results) => {
                console.log(results)
 let items = results.items;
 let lN = items[0].nickname;
 
               $w('#input6').value = lN;                
               $w('#input8').value = userEmail;  //this data is not submitted
            });
 });