I'm trying in vue to assign an event object to events but it doesn't show up to me, what am I doing wrong? Data displays correctly in the console but does not appear in the calendar.

import axios from "axios";
import "@fullcalendar/core/vdom";
import FullCalendar from "@fullcalendar/vue3";
import dayGridPlugin from "@fullcalendar/daygrid";
import interactionPlugin from "@fullcalendar/interaction";

export default {
  name: "calendar",
  components: {
    FullCalendar,
  },
  data() {
    return {
      allevents: [],
      calendarOptions: {
        plugins: [dayGridPlugin, interactionPlugin],
        initialView: "dayGridMonth",
        dateClick: this.handleDateClick,
        events: this.allevents,
      },
    };
  },
  mounted() {
    axios
      .get("url_json")
      .then((response) => {
        this.listDataString = JSON.stringify(response.data, null, "\t");
        this.allevents = response.data.result.map(eventnew => ({title: eventnew.subject, start: eventnew.start.dateTime, end: eventnew.end.dateTime, allDay: 'true'}));
        console.log(this.allevents);
        return response;
      });
  },
};