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The email I received from WordPress:

WordPress version 6.3.2
Active theme: X (version 10.3.9)
Current plugin:? (version )
PHP version 7.4.10

Error Details
=============
An error of type E_ERROR was caused in line 566 of the file /wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/documents/abstract-wcpdf-order-document.php. Error message: Uncaught Error: Class ‘WPO\WC\PDF_Invoices\Documents\Document_Number’ not found in /wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/documents/abstract-wcpdf-order-document.php:566

Stack trace:
#0 /wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/documents/abstract-wcpdf-order-document.php(503): WPO\WC\PDF_Invoices\Documents\Order_Document->set_number(Array, Object(Automattic\WooCommerce\Admin\Overrides\Order))

#1 /wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/documents/abstract-wcpdf-order-document.php(264): WPO\WC\PDF_Invoices\Documents\Order_Document->set_data(Array, Object(Automattic\WooCommerce\Admin\Overrides\Order))

#2 /wp-content/plugins/w

Below is what I receive on the orders screen. Any idea why this is happening? Thanks.