I can's seem to figure out why I'm getting this error.
I need to turn user_link
part into hyperlink(right now it outputs a text on the frontend). Error happens on this line in my shortcode.php file. I guess there is an error with a href
part:
$output .= '<td>' . $order->billing_first_name . ' ' . $order->billing_last_name . ' <a href='" . $order->user_link . "'>" . $order['user_link'] . "</a> </td>';