$(document).ready(function() {
    // Assuming you have a File Block for file uploads
    $('yui_3_17_2_1_1714477300675_3021').on('change', function(event) {
        var file = event.target.files[0]; 
        handleFileUpload(file);
    });

    function handleFileUpload(file) {
        var formData = new FormData();
        formData.append('file', file);

        $.ajax({
            url: 'https://c94r4wqsx5.execute-api.ap-southeast-2.amazonaws.com/production', // URL of your API endpoint
            method: 'POST',
            data: formData,
            processData: false, // Important for file uploads
            contentType: false, // Important for file uploads
            success: function() {
                startCheckingForResults();
            },
            error: function(error) {
                // Handle upload errors
            }
        });
    }

    // ... (rest of the code from the previous example)
});