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Posted a reply to Fatal error: call to member isOpen() on null, on the site WordPress.org Forums:
We used the beta you linked, and now it worked without problems. Thanks. -
Posted a reply to Fatal error: call to member isOpen() on null, on the site WordPress.org Forums:
We can do another attempt. Any specific things we should take into account while doing… -
Created a topic, Fatal error: call to member isOpen() on null, on the site WordPress.org Forums:
I got the following error reported: https://i.imgur.co… -
Created ticket #21544 on Core Trac:
Custom Taxonomy terms tree view not displayed correctly in backend