Thank you very much! Perfect support!
It’s strange, but now version 1.2.0 installed fine. I don’t remember the error, but a PHP error was shown when sending the order mail woocommerce. Version of WooCommerce PDF Invoices & Packing Slips plugin by WP Overnight 3.7.7.
Link to PDF Invoices: https://drive.google.com/file/d/1XtBciSnqxQzAHm_tRRd-rsRAa0rjczcf/view?usp=sharing
They have a wpo_wcpdf_after_order_details hook, but my knowledge is lacking.
Thank you.
Thanks for the answer! Version 1.1.2 is installed, subsequent ones cause an error.
