Error in wix Tutorial ?

Hello here,

I was following the wix tutorial:
https://support.wix.com/en/article/velo-tutorial-creating-a-custom-registration-form-with-code#prerequisites

But when applying the final code, I have an error that says:

I use the same part of code, I just added an async function but with or without I get the same error.

$w.onReady(()=>{console.log('Page is ready') ;

// ---------- Waiting for Database 1 to load --------

  $w('#dataset1').onReady(()=>{
    console.log('Dataset1 ready') ;

    // ---------- Waiting for Database 2 to load --------

    $w('#dataset2').onReady(()=>{
      console.log('Dataset2 ready') ;

      console.log("===== Start of the code =====");
      
      // ******************************** Send the form ********************************

      let emails = [] ;

      $w('#bInscription').onClick( async () => {

        console.log("===== Button Registration =====") ;
        
        let newId = memory.getItem("key") ;
        console.log("New iD Client memory: " + newId) ;

        // ---------- WIX DB data --------

        const password = $w('#iMdp').value ;
        let sponsor = $w('#iSponsor').value ;
        const email = $w('#iMail').value ;
          emails.push(email) ;

        let options = {
          contactInfo : {
            firstName : String($w('#iFirstName').value),
            lastName : String($w('#iName').value),
            emails : emails,
            Sponsor : Number(sponsor),
            CustomerId : Number(newId)
          },
          privacyStatus : 'PUBLIC'
        }
  
        // ---------- Registration verification --------

        await authentication.register(email, password, options)
        .then((registrationResult) => {
          const status = registrationResult.status ;
          // When the site is configured for automatic approval, the status is "ACTIVE" and the member is approved and logged in.
          console.log('Member registered and logged in:', registrationResult) ;
        })
        .catch((error) => {
          console.error(error) ;
        }) ;
      }) ;
    }) ;
  }) ;
}) ;

Both “Sponsor” and “CustomerId” have been added to the contacts in number format manually.

Can anyone help me?

[Up] Nobody knows how to do it?