Support » Plugin: PDF Invoices & Packing Slips for WooCommerce » Warning: call_user_func_array() expects parameter 1

  • Resolved samuel5

    (@samuel5)


    We are happy so far with the plugin. Just have one issue as explained below:

    On Woocommerce Order Page, when we click on Complete Order – Save order and send detail it sends out order summary to the customer. The customer sees the following warning on the bottom of the order page:
    Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘THWCFE_Admin_Settings_General’ does not have a method ‘display_custom_fields_in_email’ in /home/data_base1/public_html/wp-includes/class-wp-hook.php on line 286

    What is causing this issue? How do we remove this?

    Thanks and best regards
    Sam

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