Archived topic
TypeError: Cannot read properties of undefined
7 replies · Started by Nadine on October 25, 2021
I'm getting the following error only when I go to the Widgets area.
TypeError: Cannot read properties of undefined (reading 'PluginDocumentSettingPanel')
at c.value (/wp-content/plugins/gp-premium/dist/editor.js?ver=1629210156:1:2733)
at Ie (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:104:8)
at rh (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:103:334)
at zj (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:228:490)
at Th (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:152:223)
at tj (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:152:152)
at Te (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:146:151)
at Ja (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:224:381)
at md (/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:173:43)
at /wp-includes/js/dist/vendor/react-dom.min.js?ver=16.13.1:175:222
Hi there,
i logged into the staging site and went to Appearance > Widgets and they loaded without any errors... some of them did take an age to load though but after a little while they all appeared correctly (?):
I just tried it from a different computer and I get the error still
The editor has encountered an unexpected error.
Attempt Recovery
Copy Error
I tried too, it did take a while to load, but all the widgets were fully loaded in the end:
https://www.screencast.com/t/mC5QawLwjQ
Have you tried in an incognito window?
Let me know!
Same error in an incognito window.
I tested the site again on Safari, Chrome and Firefox ( MacOS ).
All of them report this 3 x Warning in the Developers console - relating to this:
The block "mec/blockeditor-0" is registered with an invalid category "mec.block.category".
Firefox also throws some other Console Errors but these are related to FF specfic issues with certain methods of Javascript Animations.
But in all cases the widget area loads correctly and there are visible errors in the backend.
Very peculiar that we get different results, which makes it difficult to debug.
Let's try eliminating an issue with a Legacy widget being displayed in Block Widgets. By disabling Block Widgets - this doc explains how:
https://docs.generatepress.com/article/disable-the-block-editor-in-widgets/
That worked, I can access the widgets now!
Awesome - glad to hear that - pesky Block Widgets :)
