Create new post – error

Replies: 0

When I try to create a new post, after the last update, I received this error:

Warning: Creating default object from empty value in {$my_site}/wp-admin/includes/post.php on line 641

I tried to create the new post with all plugins deactivated, but the problem is
still there.

Then, I’ve added the following define to my wp-config.php file:
define( 'WP_ALLOW_REPAIR', true );
Then run the script “repair.php” located at “{$my_site}/wp-admin/maint/repair.php”
Return no errors in the BD, but the problem persist.