Title: Plugin
Last modified: September 22, 2021

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# Plugin

 *  [webmyadd](https://wordpress.org/support/users/webmyadd/)
 * (@webmyadd)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/plugin-334/)
 * I keep getting this error after changing order status in admin panel. Call to
   member function set_shipping_state() on null woobigpost-misc-function.php. I 
   tried to move that line inside if( isset(WC()->session) ){ but it still causing
   the same error. Any idea what’s wrong.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-334%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

The topic ‘Plugin’ is closed to new replies.

 * ![](https://ps.w.org/woo-bigpost-shipping/assets/icon-256x256.png?rev=2124985)
 * [Big Post Shipping for WooCommerce](https://wordpress.org/plugins/woo-bigpost-shipping/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/woo-bigpost-shipping/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/woo-bigpost-shipping/)
 * [Active Topics](https://wordpress.org/support/plugin/woo-bigpost-shipping/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/woo-bigpost-shipping/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/woo-bigpost-shipping/reviews/)

## Tags

 * [plugin issue](https://wordpress.org/support/topic-tag/plugin-issue/)

 * 0 replies
 * 1 participant
 * Last reply from: [webmyadd](https://wordpress.org/support/users/webmyadd/)
 * Last activity: [4 years, 8 months ago](https://wordpress.org/support/topic/plugin-334/)
 * Status: not resolved