VCF as attachment

Hi,

I created this function to add a vcf to an email. It works if I try with a png file. But it is not working with vcf and I can’t figure out why. Do you have any idea ? I’m 100% sure the file is in the folder, I can access it with other functions.

add_filter('acfe/form/submit/email_args/action=mail-prospect', 'user_vcf', 10, 3);
function user_vcf($args, $form, $action) {
    $ecard_id = get_the_ID();
    $random_slug = get_field('random_slug', $ecard_id);
    
    $sourceFilePath = trailingslashit(ABSPATH) . '/f/contact/' . $random_slug . '/' . $random_slug . '.vcf';
    $destinationFilePath = trailingslashit(ABSPATH) . '/f/prospects/' . $random_slug . '.vcf';
    
    // Copy the file
    if (copy($sourceFilePath, $destinationFilePath)) {

        //WORKS $args['attachments'] = array(trailingslashit(ABSPATH) . '/f/prospects/logo-ecard.png'); 
        //DO NOT WORK $args['attachments'] = array(trailingslashit(ABSPATH) . '/f/prospects/cmdjqi.vcf'); 
        $args['attachments'] = array($destinationFilePath);
        
       //WORKS unlink($destinationFilePath);
    }
      
    return $args;
}