Critical Error with the PDF Invoicing Module in PHP 8.1
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Hello,
If I update from PHP version 7.4 to 8.0 or 8.1 at my hosting, I get an error saying:
A critical error has occurred on this site. Check your site administrator email inbox for instructions.This happens when the ‘PDF Invoicing Module’ in de Booster plugin is activated, and I put any status in the ‘Invoice’ box. Then, when I change the status of a Woocommerce order to ‘Completed’.
In this ‘PDF Invoicing Module’ I have the following settings:
Invoice: Create on Order Status Processing + Manually
If I leave this box empty, the error is gone.
In this mail, it says:
Hello!Since WordPress 5.2, there is a built-in feature that recognizes when a plugin or theme is causing a fatal error on your site and notifies you with this automatic email.
In this case, WordPress has found a problem with one of your plugins: Booster Plus for WooCommerce.
First, visit your site (https://www.***.nl) and see if there are any visible problems. Then visit the page where the error was found (https://www.***.nl/wp-admin/post.php) and see if there are any visible problems.
Please contact your host for assistance in further investigating this issue.
In case your site appears to be broken, and you can’t access the dashboard normally, WordPress now has a special “recovery mode”. This allows you to log in to your dashboard in a secure way to further investigate the problem.
https://www.***.nl/wp-login.php?action=enter_recovery_mode&rm_token=***
To keep your site safe, this link will expire in 1 day. Don’t worry about that, a new link will be sent to you if the problem reoccurs after the link has expired.
If you need help with this issue, you may be asked for the following information:
WordPress version 6.1.1
Active theme: Electro New 1/16/2023 (version 1.0) Current plugin: Booster Plus for WooCommerce (version 6.0.0) PHP version 8.1.9Error details
An error of type E_ERROR was caused on line number 18255 of the file
/home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/lib/tcpdf/tcpdf.php. Foutmelding: Uncaught TypeError: array_push(): Argument #1 ($array) must be of type array, null given in /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/lib/tcpdf/tcpdf.php:18255 Stack trace: #0 /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/lib/tcpdf/tcpdf.php(18255): array_push() #1 /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/lib/tcpdf/tcpdf.php(5859): TCPDF->writeHTML() #2 /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/lib/tcpdf/tcpdf.php(17161): TCPDF->MultiCell() #3 /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/classes/class-wcj-pdf-invoice.php(261): TCPDF->writeHTMLCell() #4 /home/####/domains/####.nl/public_html/wp-content/plugins/booster-plus-for-woocommerce/includes/pdf-invoices/submodules/class-wcj-pdf-invoicing-emails.php(90): WCJ_PDF_Invoice->get_pdf() #5 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(310): WCJ_PDF_Invoicing_Emails->add_pdf_invoice_email_attachment() #6 /home/####/domains/####.nl/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters() #7 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/emails/class-wc-email.php(461): apply_filters() #8 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/emails/class-wc-email-customer-completed-order.php(69): WC_Email->get_attachments() #9 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(308): WC_Email_Customer_Completed_Order->trigger() #10 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #11 /home/####/domains/####.nl/public_html/wp-includes/plugin.php(565): WP_Hook->do_action() #12 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/class-wc-emails.php(170): do_action_ref_array() #13 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(308): WC_Emails::send_transactional_email() #14 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #15 /home/####/domains/####.nl/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #16 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/class-wc-order.php(387): do_action() #17 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/class-wc-order.php(245): WC_Order->status_transition() #18 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php(699): WC_Order->save() #19 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(310): WC_Meta_Box_Order_Data::save() #20 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #21 /home/####/domains/####.nl/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #22 /home/####/domains/####.nl/public_html/wp-content/plugins/woocommerce/includes/admin/class-wc-admin-meta-boxes.php(258): do_action() #23 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(310): WC_Admin_Meta_Boxes->save_meta_boxes() #24 /home/####/domains/####.nl/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #25 /home/####/domains/####.nl/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #26 /home/####/domains/####.nl/public_html/wp-includes/post.php(4717): do_action() #27 /home/####/domains/####.nl/public_html/wp-includes/post.php(4819): wp_insert_post() #28 /home/####/domains/####.nl/public_html/wp-admin/includes/post.php(426): wp_update_post() #29 /home/####/domains/####.nl/public_html/wp-admin/post.php(227): edit_post() #30 {main} thrownWith PHP version 8.1 activated, I have also tested it with activating theme Twenty Twenty-Three and deactivated all other plugins but your Booster plugin and Woocommerce. And the problem is still there. When I activate PHP 7.4. the problem is gone. So it is really the Booster plugin.
My hosting told me it is your booster plugin that is not PHP 8.1 ready…
Can you fix this problem?
I hope you will.
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