Code works in preview but not in live site

Here is all of the code. Maybe someone will see something that could help …

import wixData from "wix-data";

$w.onReady(function () {
 
});

export function emailCheck_click(event) {
 let toverifyEmail = $w("#emailtoVerify").value;
 let verificationEmail = (toverifyEmail).toLowerCase();

        wixData.query("regClients")
        .eq("registerEmail", (verificationEmail))
        .find()
        .then((results) => {
 if(results.items.length > 0) {
                $w("#verifyError").expand();
            }
 else {
            $w("#registerForm").expand();
            }
    })
    .catch( (err) => {
 let errorMsg = err;
    });
}