I have some jQuery and JavaScript and when I try to compress the JavaScript I get an error saying Unexpected character '`'

I tried two JavaScript compressors but both gave me the same error

I don't know what is the cause of my error:

Here is my code:

// Login Form Sumbission
$("#loginForm").submit(function (event){

    $("#loginButton").prop("disabled", true);
    $("#loginButton").html(`<div class="spinner-border text-light spinner-border-sm" role="status"><span class="visually-hidden">Loading...</span></div> Submit`);
    $("#loginEmail").off("input")
    $("#loginPassword").off("input")

    let formData = {
        "csrfmiddlewaretoken": $('#loginForm input[name=csrfmiddlewaretoken]').val(),
        "email": $("#loginEmail").val(),
        "password": $("#loginPassword").val(),
    };

    $.ajax({
        type: "POST",
        url: "/accounts/login/",
        data: formData,
        dataType: "json",
        encode: true,
    }).done(function (data){
        var status = data["status"];

        // If The User Successfully Logged In
        if (status === "success"){

            // Update Navigation Bar
            $("#navbar").replaceWith(data["navbarHtml"]);
            $("#loginModal button.btn-close").click();
            $("#modals").remove();

            // Update Other Things On The Web Page Base On Thier Path
            let path = window.location.pathname;

            if (path in data){
                var updateData = data[path]
            }
            else{
                var updateData = {}
            };

            for (item in updateData) {
                $(item).replaceWith(updateData[item]);             
            };

            $("#messages").html(`
            <div style="margin-bottom: 0px" class="alert alert-success alert-dismissible fade show" role="alert" id="messages">
                <strong class="text-dark">${data["message"]}</strong>
                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
            </div>`)

        };
    });

    event.preventDefault();
});