"TypeError:" in Form Submit Confirmation Controller

[Linuxmaker]

Hello everyone,

I'm trying to recreate this modal . I don't use a form now, I use a button.
<button type="button" data-controller="submit-confirm" data-action="submit-confirm#onSubmit" class="w-100 btn btn-sm btn-outline-danger" data-bs-trigger="hover" data-bs-toggle="popover" data-bs-placement="top" data-bs-title="Vorsicht! Löschen des Datensatzes!" data-bs-content="Hier wird der Datensatz Betriebshaftpflichtversicherung gelöscht!."><a href="/betriebskosten/entfernen/7">Löschen</a></button>

The corresponding controller "submit_confirm_controller.js looks like this:
`import { Controller } from '@hotwired/stimulus';
import Swal from 'sweetalert2';

export default class extends Controller {
onSubmit(event) {
event.preventDefault();
console.log(event);
Swal.fire({
title: 'Sind Sie sicher?',
text: "Sie können dies nicht rückgängig machen!",
icon: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: 'Ja, löschen Sie es!',
}).then((result) => {
if (result.isConfirmed) {
this.element.submit();
}
})
}
}`

This also works except for deleting the record. Here I get the message in the web browser console:
when I press the submit button of the modal.
Uncaught (in promise) TypeError: _this.element.submit is not a function
Can someone tell me how to fix this error? Or does this solution only work for forms?

Best regards
Andreas