Yes, sort of: You seem to have a plugin or something in your theme that replaces the “src” attribute of your images with “data-trx-lazyload-src”. Presumably this is supposed to be handled by some javascript when the user views the image, but unfortunately this isn’t loaded or doesn’t work on your login page in particular.
You will need to disable this feature on the login page in particular if possible.
You can probably also do the lazy-loading manually sort of, by adding a snippet like this to your child-themes functions.php:
add_action('login_header', function () {
echo "<script>jQuery(document).ready(function () {
let trx = jQuery('a.vipps-button img').data('trx-lazyload-src');
if (trx) jQuery('a.vipps-button img').attr('src', trx);
}); </script>";
});
— but that’s just a workaround; it’s better if you can disable the lazy-loading feature on this page.