Your wordpress website prevents EPS file, you may want to try opening the wp-config.php file of your WordPress installation and above the line where it says:
/* That’s all, stop editing! Happy blogging. */
add the following code:
define('ALLOW_UNFILTERED_UPLOADS', true);
Or preferably Add the following to your theme functions.php
function accept_eps_mimes($mimes = array()) {
// Add a key and value for the EPS file type
$mimes['eps'] = "application/postscript";
return $mimes;
}
add_action('upload_mimes', 'accept_eps_mimes');