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Errors when using 3rd-party blocks with Dynamic Sources since WP 5.9 update


Topic Tags: Toolset Blocks


Since WordPress 5.9, if using non-Toolset blocks (including core blocks) with dynamic sources in templates, Views, or custom archives, errors are thrown and it may not be possible to edit the page.

In the browser console errors such as the following may appear:

Uncaught TypeError: Cannot assign to read only property 'className' of object '#Object'

react-dom.js?ver=17.0.1:20115 The above error occurred in the  component:

Consider adding an error boundary to your tree to customize error handling behavior.


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