Attach file to email

I am trying to attach a file to emails, and I can get it working for existing orders that i have tested.
However, when i try to submit a new order, i get the following error:

2019-05-21T20:10:05+00:00 CRITICAL Uncaught Error: Call to undefined method stdClass::get_status() in /home/hypitchmarketing/public_html/wp-content/themes/hypitch-onepress-child/functions.php:401
Stack trace:
#0 /home/hypitchmarketing/public_html/wp-includes/class-wp-hook.php(286): attach_terms_conditions_pdf_to_email(Array, ‘qwc_req_new_quo…’, Object(stdClass))
#1 /home/hypitchmarketing/public_html/wp-includes/plugin.php(208): WP_Hook->apply_filters(Array, Array)
#2 /home/hypitchmarketing/public_html/wp-content/plugins/woocommerce/includes/emails/class-wc-email.php(403): apply_filters(‘woocommerce_ema…’, Array, ‘qwc_req_new_quo…’, Object(stdClass))
#3 /home/hypitchmarketing/public_html/wp-content/plugins/quotes-for-woocommerce/includes/emails/class-qwc-req-new-quote.php(80): WC_Email->get_attachments()
#4 /home/hypitchmarketing/public_html/wp-includes/class-wp-hook.php(286): QWC_Request_New_Quote->trigger(3860)
#5 /home/hypitchmarketing/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array)
#6 /home/hypitchmar in /home/hypitchmarketing/public_html/wp-content/themes/hypitch-onepress-child/functions.php on line 401

Below is the function i am using,
and this is line 401: $order_status = $order->get_status();

Any idea why I would get an error with “get_status()” ?

/*
* Attach Terms & Conditions to email, based on Category
*/

add_filter( ‘woocommerce_email_attachments’, ‘attach_terms_conditions_pdf_to_email’, 10, 3);

function attach_terms_conditions_pdf_to_email ( $attachments, $status , $order ) {

$allowed_post_statuses = array (‘Approved’, ‘completed’); // STATUS TO ADD THE TERMS TO
$order_status = $order->get_status();
if ($order_status == null) {

}
else {
if( isset( $status ) && in_array ( $order_status, $allowed_post_statuses ) ) { //check if status is on status list

$send_email = false; // set email to false
$order_items = $order->get_items(); //get order items

foreach ($order_items as $item) { // loop through order items
$terms = wp_get_post_terms( $item->get_product_id(), ‘product_cat’ );
// Loop through the product categories WP_Term objects
foreach( $terms as $wp_term ){
// Get the product category ID
$term_id = $wp_term->term_id;

switch($term_id) {
case 70:
$your_pdf_path = WP_CONTENT_DIR . ‘/uploads/test.pdf’;
$attachments[] = $your_pdf_path;
break;
case 74:
$your_pdf_path = WP_CONTENT_DIR . ‘/uploads/test1.pdf’;
$attachments[] = $your_pdf_path;
break;
}

}
}
}
}
return $attachments;
}

Thanks

Alex