Title: Block cannot be previewed / unexpected error Last modified: November 10, 2020 --- # Block cannot be previewed / unexpected error * [greenspector](https://wordpress.org/support/users/greenspector/) * (@greenspector) * [5 years, 7 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/) * Hello. * We’re on the 5.3.6 WordPress using the 1.9.3 version of Kadence Blocks. Since the update, we can’t edit any blocks. We encountered some errors while attempting to edit content : – This block has encountered an error and cannot be previewed– The editor has encountered an unexpected error * Does anyone know how to fix those errors? Thanks! - This topic was modified 5 years, 7 months ago by [greenspector](https://wordpress.org/support/users/greenspector/). Viewing 6 replies - 1 through 6 (of 6 total) * Plugin Contributor [Ben Ritner – Kadence WP](https://wordpress.org/support/users/britner/) * (@britner) * [5 years, 7 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13644249) * I can’t recreate your issue. Try deactivating plugins. * Ben * [rjenrow](https://wordpress.org/support/users/rjenrow/) * (@rjenrow) * [5 years, 7 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13645249) * I’m also having this issue, even after disabling all other plugins and reverting to a twentytwenty theme. * When I try to repair, it says ‘This block has encountered an error and cannot be previewed’ * Any ideas here? This is primarily happening with the advanced gallery block. * [ck](https://wordpress.org/support/users/ckeefe987/) * (@ckeefe987) * [5 years, 7 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13655351) * I’m having the same issue. Any luck? I deactivated and still not working * Plugin Contributor [Ben Ritner – Kadence WP](https://wordpress.org/support/users/britner/) * (@britner) * [5 years, 7 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13655569) * Right click while in the editor and click “inspect” and then look in the console log. Check to see what error is showing there and report. * Make sure to try to recover your block: [https://www.kadenceblocks.com/docs/how-to-recover-a-broken-block/](https://www.kadenceblocks.com/docs/how-to-recover-a-broken-block/) * Ben * [rjenrow](https://wordpress.org/support/users/rjenrow/) * (@rjenrow) * [5 years, 6 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13667743) * I’ve pasted the console error I’m getting below. It happens after I attempt block recovery as described in your link above. * ``` react_devtools_backend.js:2430 DOMException: Failed to execute 'setAttribute' on 'Element': '“' is not a valid attribute name. at xe (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:28259) at https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:27030 at Array.forEach () at C (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:26808) at Oe (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:27622) at Fe (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:29104) at Ce (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:29544) at fe (https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:40456) at https://chswffdev2.wpengine.com/wp-includes/js/dist/rich-text.min.js?ver=a4056cfcb2aec8ceb3c8e8935dfd0bc4:7:43664 at Vb (https://chswffdev2.wpengine.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:104:431) overrideMethod @ react_devtools_backend.js:2430 ve @ react-dom.min.js?ver=16.9.0:103 f.componentDidCatch.c.callback @ react-dom.min.js?ver=16.9.0:114 yg @ react-dom.min.js?ver=16.9.0:62 xg @ react-dom.min.js?ver=16.9.0:61 Ti @ react-dom.min.js?ver=16.9.0:148 unstable_runWithPriority @ react.min.js?ver=16.9.0:26 Ma @ react-dom.min.js?ver=16.9.0:52 Ia @ react-dom.min.js?ver=16.9.0:140 ze @ react-dom.min.js?ver=16.9.0:118 (anonymous) @ react-dom.min.js?ver=16.9.0:53 unstable_runWithPriority @ react.min.js?ver=16.9.0:26 Ma @ react-dom.min.js?ver=16.9.0:52 mg @ react-dom.min.js?ver=16.9.0:52 V @ react-dom.min.js?ver=16.9.0:52 Be @ react-dom.min.js?ver=16.9.0:119 xi @ react-dom.min.js?ver=16.9.0:39 ``` * Plugin Contributor [Ben Ritner – Kadence WP](https://wordpress.org/support/users/britner/) * (@britner) * [5 years, 6 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13684833) * [@rjenrow](https://wordpress.org/support/users/rjenrow/) Unfortunately, that doesn’t tell me anything. * Can you create a brand new page and recreate your error? If so can you explain the steps you are taking? * Ben Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Block cannot be previewed / unexpected error’ is closed to new replies. * ![](https://ps.w.org/kadence-blocks/assets/icon-256x256.png?rev=3178382) * [Kadence Blocks — Page Builder Toolkit for Gutenberg Editor](https://wordpress.org/plugins/kadence-blocks/) * [Frequently Asked Questions](https://wordpress.org/plugins/kadence-blocks/#faq) * [Support Threads](https://wordpress.org/support/plugin/kadence-blocks/) * [Active Topics](https://wordpress.org/support/plugin/kadence-blocks/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/kadence-blocks/unresolved/) * [Reviews](https://wordpress.org/support/plugin/kadence-blocks/reviews/) * 6 replies * 6 participants * Last reply from: [Ben Ritner – Kadence WP](https://wordpress.org/support/users/britner/) * Last activity: [5 years, 6 months ago](https://wordpress.org/support/topic/block-cannot-be-previewed-unexpected-error/#post-13684833) * Status: not resolved