I am in the process of building my categories and then encountered the following error when I tried to delete a sub-category, which I had already done several times without any problems:
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A fatal error has occured:

GT::SQL::Table (84442): Wrong argument passed to this subroutine. Usage: Could not create a condition object out of arguments. at /usr/local/www/vhosts/mydomain.com/htdocs/directory/admin/Links/Category.pm line 151.

Please enable debugging in setup for more details.

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Any help would sure be appreciated