php notice – help in tracking down pls

Thanks! – thats what I needed the “->” (I didnt said it was on line 469.. – its on line 48)
I have located the snippet – I wonder if have any thoughts on how to adjust it ? The snippet is part of a larger snippet which adds a custom Order status of ‘Processing’ for woocommerce orders.
The offending line is on line 48 which adds color to the Order status button.

01 // 1 New order status AFTER woo 2.2 IN PROGRESS be very careful IF YOU DELETE THIS SNIPPET - ANY ORDERS WITH THE IN PROGRESS STATUS WILL JUST DISAPPEAR
02 add_action( 'init', 'register_my_new_order_statuses' );
03 function register_my_new_order_statuses() {
04     register_post_status( 'wc-in-progress', array(
05         'label'                     => _x( 'In Progress', 'Order status', 'woocommerce' ),
06         'public'                    => true,
07         'exclude_from_search'       => false,
08         'show_in_admin_all_list'    => true,
09         'show_in_admin_status_list' => true,
10         'label_count'               => _n_noop( 'In Progress <span class="count">(%s)</span>', 'In Progress<span class="count">(%s)</span>', 'woocommerce' )
11     ) );
12 }
13 add_filter( 'wc_order_statuses', 'my_new_wc_order_statuses' );
14 // Register in wc_order_statuses.
15 function my_new_wc_order_statuses( $order_statuses ) {
16     $order_statuses['wc-in-progress'] = _x( 'In Progress', 'Order status', 'woocommerce' );
17     return $order_statuses;
18 }
19 
20 /*
21  * 2 CHANGE STATUSES ORDER IN DROPDOWN LIST
22  * @param array $wc_statuses_arr Array of all order statuses on the website
23  */
24 function change_statuses_order( $wc_statuses_arr ){
25  
26 	$new_statuses_arr = array(
27 		'wc-processing' => $wc_statuses_arr['wc-processing'], // 1
28 		'wc-in-progress' => $wc_statuses_arr['wc-in-progress'], // 2
29 		'wc-completed' => $wc_statuses_arr['wc-completed'], // 3
30 		'wc-cancelled' => $wc_statuses_arr['wc-cancelled'], // 4
31 		'wc-refunded' => $wc_statuses_arr['wc-refunded'], // 5
32 		'wc-failed' => $wc_statuses_arr['wc-failed'], // 6
33 		'wc-pending' => $wc_statuses_arr['wc-pending'], // 7
34 		'wc-on-hold' => $wc_statuses_arr['wc-on-hold'] // 8
35 	);
36  
37 	return $new_statuses_arr;
38 }
39  
40 add_filter( 'wc_order_statuses', 'change_statuses_order' );
41 
42 // 3. ADD COLOR TO IN PROGRESS BUTTON
43 add_action('admin_head', 'styling_admin_order_list' );
44 function styling_admin_order_list() {
45     global $pagenow, $post;
46 
47     if( $pagenow != 'edit.php') return; // Exit
48     if( get_post_type($post->ID) != 'shop_order' ) return; // Exit
49 
50     // HERE below set your custom status
51     $order_status = 'In Progress'; // <==== HERE
52     ?>
53     <style>
54         .order-status.status-<?php echo sanitize_title( $order_status ); ?> {
55             background: #cc0099;
56             color: #ffffff;
57         }
58     </style>
59     <?php
60 }
61 
62 /** 4. ADD IN PROGRESS STATUS TO WOO SALES REPORTS **/
63 add_filter( 'woocommerce_reports_order_statuses', 'include_custom_order_status_to_reports', 20, 1 );
64 function include_custom_order_status_to_reports( $statuses ){
65  // Adding the custom order status to the 3 default woocommerce order statuses
66  return array( 'processing', 'in-progress', 'completed', 'on-hold' );
67 }
68 
69 /** 5. Add In Progress to Admin Order List Bulk Edit Dropdown **/
70 add_filter( 'bulk_actions-edit-shop_order', 'custom_dropdown_bulk_actions_shop_order', 20, 1 );
71 function custom_dropdown_bulk_actions_shop_order( $actions ) {
72     $actions['mark_in-progress'] = __( 'Mark In Progress', 'woocommerce' );
73     return $actions;
74 }

Thanks ! Worked perfectly. No error lines for 10 days. Really appreciate your time and expertise on this. Sent a small donation thru the plugin donation link as a thank you.