Title: Plugin causing fatal error
Last modified: December 5, 2020

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# Plugin causing fatal error

 *  [Bgudmundsson](https://wordpress.org/support/users/stockvault/)
 * (@stockvault)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/plugin-causing-fatal-error-6/)
 * Plugin is causing fatal error when you add product to cart.
 *     ```
       PHP Fatal error:  Uncaught Error: Cannot use object of type WP_Error as array in /home/xxx/public_html/wp-content/plugins/posturinn/inc/postis.class.php:394
       Stack trace:
       #0 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-shipping-method.php(233): POSTIS_Shipping->calculate_shipping(Array)
       #1 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(345): WC_Shipping_Method->get_rates_for_package(Array)
       #2 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/class-wc-shipping.php(260): WC_Shipping->calculate_shipping_for_package(Array, 0)
       #3 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1391): WC_Shipping->calculate_shipping(Array)
       #4 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(339): WC_Cart->calculate_shipping()
       #5 /home/xxx/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(849): WC_Cart_Totals->get_shipping_from_cart()
       #6 /home/xxx in /home/xxx/public_html/wp-content/plugins/posturinn/inc/postis.class.php on line 394
       ```
   
    -  This topic was modified 5 years, 5 months ago by [Bgudmundsson](https://wordpress.org/support/users/stockvault/).

The topic ‘Plugin causing fatal error’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [Bgudmundsson](https://wordpress.org/support/users/stockvault/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/plugin-causing-fatal-error-6/)
 * Status: not resolved