Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "kp_get_client_id" not found or invalid function name in /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/class-wp-hook.php:324 Stack trace: #0 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/plugin.php(205): WP_Hook->apply_filters('', Array) #1 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-content/plugins/klarna-onsite-messaging-for-woocommerce/klarna-onsite-messaging-for-woocommerce.php(260): apply_filters('kosm_data_clien...', '') #2 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-content/plugins/klarna-onsite-messaging-for-woocommerce/klarna-onsite-messaging-for-woocommerce.php(80): Klarna_OnSite_Messaging_For_WooCommerce->set_data_client_id() #3 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/class-wp-hook.php(324): Klarna_OnSite_Messaging_For_WooCommerce->init('') #4 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #5 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-settings.php(555): do_action('plugins_loaded') #7 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-config.php(119): require_once('/customers/3/a/...') #8 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-load.php(50): require_once('/customers/3/a/...') #9 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-blog-header.php(13): require_once('/customers/3/a/...') #10 /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/index.php(17): require('/customers/3/a/...') #11 {main} thrown in /customers/3/a/0/sundsoradeltrasverige.se/httpd.www/wp-includes/class-wp-hook.php on line 324