Uncaught Error: Call to a member function get_payment_method()

Hey afmalvarez,

It could be that some code on your site is passing an invalid value to WooCommerce.

I know you mentioned you didn’t add anything new to your site, but updating exsiting plugins/themes can also introduce problems. This is why we recommend doing any changes (including updates) on a staging site first.

I would recommend as a first step, trying some conflict testing. We have a guide on how to test for conflicts here:
https://docs.woocommerce.com/document/woocommerce-self-service-guide/#section-4

I’m assuming this is your live site, so I would recommend doing a full backup (site and database) before starting these tests.

If you find during the steps in the guide above that disabling a specific plugin or theme resolves the problem, then you’ll know the source of the conflict. At that point you can check if that plugin/theme has an available update to resolve the problem. If it doesn’t, you’ll want to contact the developer of that plugin for fix.

Let us know how that goes.

afmalvarez, did you follow the conflict testing guide that I shared above?

You’ll want to switch to the default Twenty Nineteen or Storefront theme, then disable all plugins except for WooCommerce.

Do you still have the problem after following those steps?

@afmalvarez have you made any customizations directly to WooCommerce files? If so, you’ll also want to reverse those with your testing.

If no other plugins are running and you are using the stock Twenty Nineteen or Storefront theme, then there is nothing with WooCommerce itself that would cause this error. If you still have this problem, you may want to try removing the WooCommerce plugin and reinstalling it in case there are any altered files.

Uninstalling WooCommerce will not remove your WooCommerce data (products, orders, etc) by default. As long as you have not added define( 'WC_REMOVE_ALL_DATA', true); to your sites wp-config.php file, all your data will remain. That being said, we always recommend making a backup of your site/database before making any changes.

You can then reinstall WooCommerce and it should be back to it’s default working state.

If you still have problems after that then either there are other customizations in your site that are causing this (edits to the theme’s code or WordPress code). Or there is something in your hosting environment causing the issue.

I hope that info helps!

I’m having the same problem when I try to add a new order

Fatal error: Uncaught Error: Call to a member function get_payment_method() on boolean in /home/wbxracks/public_html/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php:156 Stack trace: #0 /home/wbxracks/public_html/wp-admin/includes/template.php(1306): WC_Meta_Box_Order_Data::output(Object(stdClass), Array) #1 /home/wbxracks/public_html/wp-admin/edit-form-advanced.php(638): do_meta_boxes(Object(WP_Screen), ‘normal’, Object(stdClass)) #2 /home/wbxracks/public_html/wp-admin/post-new.php(75): include(‘/home/wbxracks/…’) #3 {main} thrown in /home/wbxracks/public_html/wp-content/plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php on line 156