{"id":19030719,"date":"2026-09-27T22:22:11","date_gmt":"2026-09-27T22:22:11","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/carousel-failing-in-wordpress-com-editor\/"},"modified":"2026-09-27T22:22:11","modified_gmt":"2026-09-27T22:22:11","slug":"carousel-failing-in-wordpress-com-editor","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/carousel-failing-in-wordpress-com-editor\/","title":{"rendered":"Carousel failing in WordPress.com editor"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I have just installed &#8216;Stackable &#8211; Gutenberg Blocks&#8217; 3.20.2 on my WordPress.com site, \/\/nlbryar.page.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On creating a post and adding a &#8216;Carousel&#8217; widget, the WSIWYG editor renders &#8220;This block has encountered an error and cannot be previewed&#8221; with the Settings sidebar showing only &#8220;Carousel.  A carousel slider&#8221; with no parameter controls at all in the pane.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I&#8217;m using MS Edge version 154.0.4258.37 64bit, Windows 11.   WP.com&#8217;s Gutenberg 24.0.0 plugin.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dev console shows this error when the widget is added:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">react-dom-19.min.js?ver=19.2.8:10 TypeError: Cannot read properties of undefined (reading &#8216;includes&#8217;)<br \/>at Jr (stk.js?ver=3.20.2:2:530131)<br \/>at $c (react-dom-19.min.js?ver=19.2.8:10:48029)<br \/>at ic (react-dom-19.min.js?ver=19.2.8:10:70662)<br \/>at nv (react-dom-19.min.js?ver=19.2.8:10:80983)<br \/>at Bv (react-dom-19.min.js?ver=19.2.8:10:116473)<br \/>at fh (react-dom-19.min.js?ver=19.2.8:10:115555)<br \/>at Mf (react-dom-19.min.js?ver=19.2.8:10:115393)<br \/>at Uv (react-dom-19.min.js?ver=19.2.8:10:112230)<br \/>at F0 (react-dom-19.min.js?ver=19.2.8:10:124003)<br \/>at en (react-dom-19.min.js?ver=19.2.8:10:122554)<\/p>\n","protected":false},"template":"","class_list":["post-19030719","topic","type-topic","status-publish","hentry","topic-tag-editor-error","topic-tag-javascript-error"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19030719","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\/19030719\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=19030719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}