Title: Problem meta_exists on null
Last modified: January 11, 2019

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# Problem meta_exists on null

 *  Resolved [volante8](https://wordpress.org/support/users/volante8/)
 * (@volante8)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/problem-meta_exists-on-null/)
 * Hi, I have a problem using this plugin with “Flexible Checkout Fields”. I already
   ask at this plugin developer and they told me that problem was generated by “
   Woocommerce checkout manager”. Here’s my information details:
    – Woocommerce 
   checkout manager: 4.2.4 – Flexibile Checkout Fields: 1.8 – Woocommerce 3.5.3 –
   WordPress 4.9.9 – Stack Trace: Fatal error: Uncaught Error: Call to a member 
   function meta_exists() on null in d:\mypathtosite\wp-content\plugins\woocommerce\
   includes\class-wc-checkout.php:1127 Stack trace: #0 d:\mypathtosite\wp-content\
   plugins\woocommerce-checkout-manager\includes\checkout-billing.php(72): WC_Checkout-
   >get_value(‘billing_country’) #1 d:\mypathtosite\wp-includes\class-wp-hook.php(
   288): wooccm_checkout_billing_fields(Array) #2 d:\mypathtosite\wp-includes\plugin.
   php(203): WP_Hook->apply_filters(Array, Array) #3 d:\mypathtosite\wp-content\
   plugins\woocommerce\includes\class-wc-countries.php(1305): apply_filters(‘woocommerce_bil…’,
   Array, ‘IT’) #4 d:\mypathtosite\wp-content\plugins\flexible-checkout-fields\classes\
   settings.php(113): WC_Countries->get_address_fields(‘IT’, ‘billing_’) #5 d:\mypathtosite\
   wp-includes\class-wp-hook.php(286): Flexible_Checkout_Fields_Settings->renderInspireCheckoutFieldsSettingsPage(”)#
   6 d:\mypathtosite\wp-includes\class-wp-hook.php(310): WP_Hook->apply_ in d:\mypathtosite\
   wp-content\plugins\woocommerce\includes\class-wc-checkout.php on line 1127
 * Error is generated when I access the admin page of “Flexibile Checkout manager”.
   The plugin works well until last update.
 * Best Regards

Viewing 1 replies (of 1 total)

 *  [Michael Visser](https://wordpress.org/support/users/visser/)
 * (@visser)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/problem-meta_exists-on-null/#post-11084887)
 * Hi [@volante8](https://wordpress.org/support/users/volante8/), thanks for raising
   this. Having both WCM and Flexible Checkout Fields Plugins activated at the same
   time is likely causing this issue. WCM calls the following Filters across the
   WordPress site including the WordPress Administration:
 * – woocommerce_checkout_fields
    – woocommerce_billing_fields – woocommerce_default_address_fields–
   woocommerce_shipping_fields
 * I could look at restricting the above Filter requests to only where required 
   but this is not an urgent issue compared to other support issues currently being
   raised here on w.org.
 * If you de-activate WCM then this issue will not happen, the same if you disable
   the Flexible Checkout Fields Plugin.

Viewing 1 replies (of 1 total)

The topic ‘Problem meta_exists on null’ is closed to new replies.

 * ![](https://ps.w.org/woocommerce-checkout-manager/assets/icon-256x256.jpg?rev
   =2911736)
 * [Checkout Field Manager (Checkout Manager) for WooCommerce](https://wordpress.org/plugins/woocommerce-checkout-manager/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce-checkout-manager/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/woocommerce-checkout-manager/)
 * [Active Topics](https://wordpress.org/support/plugin/woocommerce-checkout-manager/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce-checkout-manager/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/woocommerce-checkout-manager/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Michael Visser](https://wordpress.org/support/users/visser/)
 * Last activity: [7 years, 5 months ago](https://wordpress.org/support/topic/problem-meta_exists-on-null/#post-11084887)
 * Status: resolved