Title: Problem with Save change button
Last modified: November 29, 2023

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# Problem with Save change button

 *  [florij](https://wordpress.org/support/users/florianjud/)
 * (@florianjud)
 * [2 years, 6 months ago](https://wordpress.org/support/topic/problem-with-save-change-button/)
 * Dears,
   i am not anymore able to save changes in the printful plugin in woocommerce.
   Under the tab “settings” you can set the “size guide” name, colors, etc.. In 
   case i push the “Save change” button nothing is working. I get an “500 error.”–
   > “Failed to load resource: the server responded with a status of 500 ()”
 * The code looks as follow:
 * 2023-11-27T16:55:21+00:00 CRITICAL Uncaught TypeError: in_array(): Argument #
   2 ($haystack) must be of type array, null given in /home/.sites/358/site8537238/
   web/wp-content/plugins/printful-shipping-for-woocommerce/includes/class-printful-
   admin-settings.php:304
 * Stack trace:
 * #0 /home/.sites/358/site8537238/web/wp-content/plugins/printful-shipping-for-
   woocommerce/includes/class-printful-admin-settings.php(304): in_array(‘STANDARD’,
   NULL)
 * #1 /home/.sites/358/site8537238/web/wp-content/plugins/printful-shipping-for-
   woocommerce/includes/class-printful-admin-settings.php(340): Printful_Admin_Settings-
   >prepare_carriers()
 * #2 /home/.sites/358/site8537238/web/wp-includes/class-wp-hook.php(324): Printful_Admin_Settings::
   save_printful_settings(”)
 * #3 /home/.sites/358/site8537238/web/wp-includes/class-wp-hook.php(348): WP_Hook-
   >apply_filters(”, Array)
 * #4 /home/.sites/358/site8537238/web/wp-includes/plugin.php(517): WP_Hook->do_action(
   Array)
 * #5 /home/.sites/358/site8537238/web/wp-admin/admin-ajax.php(188): do_action(‘
   wp_ajax_save_pr…’)
 * #6 {main}
 *   thrown in /home/.sites/358/site8537238/web/wp-content/plugins/printful-shipping-
   for-woocommerce/includes/class-printful-admin-settings.php in Zeile 304
 * Does someone can help with a solution?
 * Regards
 * Florian
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fproblem-with-save-change-button%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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 * ![](https://ps.w.org/printful-shipping-for-woocommerce/assets/icon-256x256.png?
   rev=1067891)
 * [Printful Integration for WooCommerce](https://wordpress.org/plugins/printful-shipping-for-woocommerce/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/printful-shipping-for-woocommerce/#faq)
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## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [florij](https://wordpress.org/support/users/florianjud/)
 * Last activity: [2 years, 6 months ago](https://wordpress.org/support/topic/problem-with-save-change-button/)
 * Status: not resolved