Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class Salbos_frontend does not have a method "show_add_to_cart_salbos_product" in /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/class-wp-hook.php:324 Stack trace: #0 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #1 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/plugins/woocommerce/includes/wc-template-functions.php(1776): do_action('woocommerce_sal...') #3 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/feature/woocommerce-modules.php(1127): woocommerce_template_single_add_to_cart() #4 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/module/woocommerce/AddToCart.php(474): et_builder_wc_render_module_template('woocommerce_tem...', Array, Array) #5 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/module/woocommerce/AddToCart.php(649): ET_Builder_Module_Woocommerce_Add_To_Cart::get_add_to_cart(Array) #6 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Module_Woocommerce_Add_To_Cart->render(Array, '', 'et_pb_wc_add_to...', '', '', '', '', '') #7 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(434): ET_Builder_Element->_render(Array, '', 'et_pb_wc_add_to...') #8 [internal function]: do_shortcode_tag(Array) #9 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(et_pb_...', 'do_shortcode_ta...', '[et_pb_wc_title...') #10 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/main-structure-elements.php(3784): do_shortcode('[et_pb_wc_title...') #11 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Column->render(Array, '[et_pb_wc_title...', 'et_pb_column', '', '', '', '', '') #12 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(434): ET_Builder_Element->_render(Array, '[et_pb_wc_title...', 'et_pb_column') #13 [internal function]: do_shortcode_tag(Array) #14 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(et_pb_...', 'do_shortcode_ta...', '[et_pb_column t...') #15 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/main-structure-elements.php(2274): do_shortcode('[et_pb_column t...') #16 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Row->render(Array, '[et_pb_column t...', 'et_pb_row', '', '', '', '', '') #17 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(434): ET_Builder_Element->_render(Array, '[et_pb_column t...', 'et_pb_row') #18 [internal function]: do_shortcode_tag(Array) #19 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(et_pb_...', 'do_shortcode_ta...', '[et_pb_row colu...') #20 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/main-structure-elements.php(1606): do_shortcode('[et_pb_row colu...') #21 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Section->render(Array, '[et_pb_row colu...', 'et_pb_section', '', '', '', '', '') #22 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(434): ET_Builder_Element->_render(Array, '[et_pb_row colu...', 'et_pb_section') #23 [internal function]: do_shortcode_tag(Array) #24 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(et_pb_...', 'do_shortcode_ta...', '<div class="et-...') #25 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/class-wp-hook.php(324): do_shortcode('<div class="et-...') #26 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/plugin.php(205): WP_Hook->apply_filters('<div class="et-...', Array) #27 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/core.php(46): apply_filters('et_builder_rend...', '[et_pb_section ...') #28 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend.php(347): et_builder_render_layout('[et_pb_section ...') #29 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend.php(506): et_theme_builder_frontend_render_layout('et_body_layout', 8676) #30 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend-body-template.php(7): et_theme_builder_frontend_render_body(8676, true, 8694) #31 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/template-loader.php(106): include('/data01/virt113...') #32 /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-blog-header.php(19): require_once('/data01/virt113...') #33 /data01/virt113011/domeenid/www.espakhostel.ee/booking/index.php(17): require('/data01/virt113...') #34 {main} thrown in /data01/virt113011/domeenid/www.espakhostel.ee/booking/wp-includes/class-wp-hook.php on line 324