Prevent contact duplicates in custom registration?

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6

So, I put the code in, but the message does not work. Here is my code:

import wixData from 'wix-data';

let user = wixUsers.currentUser;

user.getEmail()
  .then( (email) => {
 let userEmail = email;      // "user@something.com"
 
    wixData.query('contactInfo')
      .eq('#email', userEmail)
      .find()
      .then((res) => {
 if(res) {
              console.log('Duplicate user found, returning');
 //below is error messages to show
               $w('#error').show();
               $w('#erroBig').show();
               $w('#errorText').show();
               $w('#errorBubble').show();
          }
 else {
              wixData.insert("contactInfo",userEmail)
          }
 //insert to collection here (no duplicate found)
      })
  } );