Customising Okta Sign in Widget Error Messaging

Questions
5

Please see my code below

 var orgUrl = '<?php echo $SystemSettings['Okta_Org']?>';
            var redirectUrl = '<?php echo base_url()."auth-user"?>';
            var oktaSignIn = new OktaSignIn({
                baseUrl: orgUrl,
                logo: '<?php echo base_url()."assets/img/core_brand/logos/CR_Logo_Trans.png"?>',
                labels: {
                },
                i18n: {
                    en: {
                        'errors.E0000004': 'Invalid Credentials'
                    }
                },
                helpLinks: {
                    forgotPassword: '/reset-password'
                }
            });

            oktaSignIn.session.get(function (res) {
                if (res.status !== 'INACTIVE' && document.cookie.indexOf("CR_OSID=") >= 0 ) {
                    window.location.replace('<?php echo base_url()."dashboard"?>');
                } else {
                    // There is no active session. Show the login flow.
                    oktaSignIn.renderEl(
                        { el: '#okta-login-container' },
                        function (res) {
                            if (res.status === 'SUCCESS') {
                                console.log('User %s successfully authenticated %o', res.user.profile.login, res.user);
                                dataLayer.push({'event': 'login-success'});
                                res.session.setCookieAndRedirect();
                                document.cookie = "CR_OSID="+res.id+"; path=/";
                                res.session.setCookieAndRedirect(redirectUrl);
                            }
                        }
                    );}
            });