Hi Tobias
I am running WP 6.3.1 and TablePress 2.1.8 on my test system.
Although all works fine, when I selected a preview of theme twenty twenty three (although I do not use this theme), I get the message:
There has been a critical error on this website. Please check your site admin email inbox for instructions.
The error log indicates:
PHP Fatal error: Uncaught Error: Call to undefined function wp_get_current_user() in /home/patgennz/public_html/wp2021/wp-includes/capabilities.php:877
The problem goes away if I deactivate tablepress.
Alternatively, another solution is to add the following code at the start of configurations.php:
include_once(ABSPATH . ‘wp-includes/pluggable.php’);
I should add that there are two other plugins which cause the same problem if activated,
The problem does not interfere with normal operation, but I thought you might be able to point me towards a longer-term solution.
Regards
Andy