Italian expansions for PDF invoices

Hello,

I am writing because I found an incompatibility in the most recent versions of your plugin and this one: https://it.www.ads-software.com/plugins/woocommerce-pdf-invoices-italian-add-on/. Unluckily I need them both in order to carry on my business.

The log is here reported:
2020-04-03T14:06:02+00:00 CRITICAL Uncaught Error: Call to a member function get_type() on boolean in /home/test/public_html/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/class-wcpdf-settings-documents.php:34
Stack trace:
#0 /home/test/public_html/wp-includes/class-wp-hook.php(287): WPO\WC\PDF_Invoices\Settings_Documents->output(‘invoice’)
#1 /home/test/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(”, Array)
#2 /home/test/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#3 /home/test/public_html/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/views/wcpdf-settings-page.php(39): do_action(‘wpo_wcpdf_setti…’, ”)
#4 /home/test/public_html/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/class-wcpdf-settings.php(106): include(‘/home/test/publ…’)
#5 /home/test/public_html/wp-includes/class-wp-hook.php(287): WPO\WC\PDF_Invoices\Settings->settings_page(”)
#6 /home/test/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(”, Ar in /home/test/public_html/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/includes/class-wcpdf-settings-documents.php alla riga 34

I currently have:
Wordpress: v5.4
Woocommerce: v4.0.1
PDF invoices: v2.4.7
Italian Addon: v0.7.2.16