[Aufgelöst] report an issue when using the plugin “WooCommerce – PDF Vouchers

Hello, i need to report an issue when using the plugin “WooCommerce – PDF Vouchers” by WPWeb and “WooCommerce Multilingual & Multi-Currency” Plugin from WPML in PHP 8.0.25 an higher. When the customer is on the woocommerce checkoutpage and clicks on the “place order button” an internal server error message appears. The order is placed anyway, but the customer does not notice until the confirmation e-mail arrives. This does happen with “downloadable” products as well as with none downloadable products. The website is running on Hello Elementor theme and Elementor pro and WPML. There are running several other plugins on the website, but deactivating all of them exept Woocommerce, WPML, WooCommerce Multilingual & Multi-Currency and WooCommerce – PDF Vouchers (which are essential) and switching back to Twenty Twenty-Three Theme the problem still appears. When switching the server to php 7.4.33 it works fine. Turning off WooCommerce Multilingual & Multi-Currency or Woocommerce PDF Vouchers it also works, but having activated both of them at the same time the error appears. I don’t know if the problem is Woocommerce PDF Vouchers or WooCommerce Multilingual & Multi-Currency, but i wanted to report the issue, hoping it will be fixed soon. I reported the problem to WPWeb aswell.

[22-Nov-2022 15:17:33 UTC] ] PHP Fatal error: Uncaught TypeError: method_exists(): Argument #1 ($object_or_class) must be of type object|string, array given in /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php:468
Stack trace:
#0 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php(468): method_exists()
#1 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php(433): WCML_Emails->get_order_id_from_email_object()
#2 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php(415): WCML_Emails->get_email_translated_string()
#3 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(310): WCML_Emails->filter_emails_strings()
#4 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#5 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/emails/class-wc-email.php(524): apply_filters()
#6 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/emails/class-wc-email.php(414): WC_Email->get_option()
#7 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-pdf-vouchers/includes/admin/class-woo-vou-vendor-sale.php(74): WC_Email->get_subject()
#8 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(308): Woo_Vou_Vendor_Sale->trigger()
#9 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#10 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(565): WP_Hook->do_action()
#11 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-emails.php(170): do_action_ref_array()
#12 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(308): WC_Emails::send_transactional_email()
#13 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#14 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(517): WP_Hook->do_action()
#15 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-pdf-vouchers/includes/class-woo-vou-model.php(1230): do_action()
#16 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-pdf-vouchers/includes/class-woo-vou-public.php(338): WOO_Vou_Model->woo_vou_vendor_sale_notification()
#17 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(310): WOO_Vou_Public->woo_vou_payment_process_or_complete()
#18 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#19 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(565): WP_Hook->do_action()
#20 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-emails.php(170): do_action_ref_array()
#21 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(308): WC_Emails::send_transactional_email()
#22 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#23 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(517): WP_Hook->do_action()
#24 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-order.php(396): do_action()
#25 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-order.php(245): WC_Order->status_transition()
#26 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-order.php(143): WC_Order->save()
#27 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-gateway-stripe/includes/abstracts/abstract-wc-stripe-payment-gateway.php(536): WC_Order->payment_complete()
#28 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-gateway-stripe/includes/class-wc-gateway-stripe.php(480): WC_Stripe_Payment_Gateway->process_response()
#29 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-checkout.php(982): WC_Gateway_Stripe->process_payment()
#30 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-checkout.php(1206): WC_Checkout->process_order_payment()
#31 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-ajax.php(481): WC_Checkout->process_checkout()
#32 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(308): WC_AJAX::checkout()
#33 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#34 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(517): WP_Hook->do_action()
#35 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce/includes/class-wc-ajax.php(94): do_action()
#36 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(308): WC_AJAX::do_wc_ajax()
#37 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#38 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/plugin.php(517): WP_Hook->do_action()
#39 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-includes/template-loader.php(13): do_action()
#40 /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-blog-header.php(19): require_once('...')
#41 /var/www/vhosts/vertikale.it/staging.vertikale.it/index.php(17): require('...')
#42 {main}
thrown in /var/www/vhosts/vertikale.it/staging.vertikale.it/wp-content/plugins/woocommerce-multilingual/inc/class-wcml-emails.php on line 468