Fullcalendar not being able to parse local JSON [closed]

I have a controller that takes the info I need from the DB and I structure it into an array, and then into a JSON with json_encode.

But then, the error I get in the browser is this: Error from the Chrome console

This image is the JSON from my controller My JSON from the controller


require_once '../classes/functions.php';
$newEvent = new calendario();
$events = $newEvent->getEvents();
$newEvent = null;

foreach ($events as $event) {
    $data[] = array(
        'title' => $event['titulo'],
        'start' => $event['inicio'],
        'end' => $event['fin'],
    header('Content-Type: application/json');


Full calendar code on my page

var calendarEl = document.getElementById('calendar');
    if (calendarEl) {
        document.addEventListener('DOMContentLoaded', function() {
            var calendar = new FullCalendar.Calendar(calendarEl, {
                locale: 'ca',
                plugins: ['dayGrid', 'timeGrid', 'list', 'bootstrap'],
                timeZone: 'UTC',
                themeSystem: 'bootstrap',
                header: {
                    left: 'today, prev, next',
                    center: 'title',
                    right: 'dayGridMonth,timeGridWeek,timeGridDay,listMonth'
                buttonIcons: {
                    prev: 'fe-arrow-left',
                    next: 'fe-arrow-right',
                    prevYear: 'left-double-arrow',
                    nextYear: 'right-double-arrow'
                weekNumbers: true,
                events: {
                    url: '../controllers/getEvents.php',
                    type: 'GET',
                    format: 'json',
                    failure: function() {
                        alert('Hem trobat errors quan hem intentat exportar les visites de la base de dades!');
                // events: 'https://fullcalendar.io/demo-events.json',
                // events: '../controllers/getEvents.php',

For the sake of trying, you will see that I tried to put the demo fullcalendar uses in their examples, this works flawlessly, but my JSON does not…


So, the problem was with functions.php. As @ADyson commented, there was a meta tag there and with the require_once I was printing it every time.

Thanks to everyone that commented and helped me, and thanks again @ADyson.

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