Frontend upload avatar max file size exceeded message

Hi,

I’m using a frontend edit profile template (manual code, no plugin). When a user exceeds the avatar file size limit it returns the following message in an empty page instead of an alert message on the edit profile page: “The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form”.

In my profile template I have:
do_action('edit_user_avatar',$current_user);

And in my functions.php I have:

if(!is_admin()){
  add_action('edit_user_avatar', array('wp_user_avatar', 'wpua_action_show_user_profile'));
  add_action('edit_user_avatar', array('wp_user_avatar', 'wpua_media_upload_scripts'));
}

I think that a more user-friendly message should appear in the same edit profile page so is there anything wrong with my code? Thnx!

https://www.ads-software.com/plugins/wp-user-avatar/