{"id":19043676,"date":"2026-10-13T11:54:24","date_gmt":"2026-10-13T11:54:24","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/critical-error-887\/"},"modified":"2026-10-13T11:54:24","modified_gmt":"2026-10-13T11:54:24","slug":"critical-error-887","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/critical-error-887\/","title":{"rendered":"Critical Error"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I&#8217;m getting this error on a product page:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fatal error<\/strong>: Uncaught Error: Call to undefined method WC_Product_Simple::variation_is_visible() in \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-content\/plugins\/woocommerce\/includes\/class-wc-product-variable.php:371 Stack trace: #0 \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-content\/plugins\/product-quantity-for-woocommerce\/includes\/settings\/class-wpfmmsq-metaboxes.php(563): WC_Product_Variable-&gt;get_available_variations() #1 \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-content\/plugins\/product-quantity-for-woocommerce\/includes\/settings\/class-wpfmmsq-metaboxes.php(157): WPFMMSQ_Metaboxes-&gt;get_meta_box_options() #2 \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-admin\/includes\/template.php(1455): WPFMMSQ_Metaboxes-&gt;display_pq_metabox(Object(WP_Post), Array) #3 \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-admin\/edit-form-advanced.php(721): do_meta_boxes(Object(WP_Screen), &#8216;normal&#8217;, Object(WP_Post)) #4 \/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-admin\/post.php(218): require(&#8216;\/home\/sites\/39a&#8230;&#8217;) #5 {main} thrown in <strong>\/home\/sites\/39a\/3\/324b5e1c0e\/public_html\/wp-content\/plugins\/woocommerce\/includes\/class-wc-product-variable.php<\/strong> on line <strong>371<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It goes away once i disable this plugin and refresh<\/p>\n","protected":false},"template":"","class_list":["post-19043676","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19043676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19043676\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=19043676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}