File: themes/backend/components/core/exception.twig

<div class="toast-container position-fixed bottom-0 end-0 p-3">
    <div class="toast align-items-center text-bg-{{ color }} fade show" role="alert" aria-live="assertive" aria-atomic="true">
        <div class="toast-body">
            <button type="button" class="btn-close me-2 m-auto float-end" data-bs-dismiss="toast" aria-label="{{ phrase('Close') }}"></button>
            <div class="row align-items-center">
                <div class="col-2">
                    <i class="{{ icon }} mdi-2x"></i>
                </div>
                <div class="col-10 text-break">
                    {{ message }}
                </div>
            </div>
        </div>
    </div>
</div>