Detected while testing EZP-22930.
If you make a Criterion\FullText search with an empty value and you will get the following error:

[eZ\Publish\Core\Persistence\Database\QueryException] The expression ' OR ' expected at least 1 argument but none provided.

It's important to notice that, if empty values are not suposed to be used, there should be an exception in the same way Criterion\Subtree does when the path is not in the format /1/2/xxx

According to the error trace, the problem seems to come from CriterionHandler\FullText->getWordIdSubquery

#0 /var/www/eZ/530/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Persistence/Doctrine/DoctrineExpression.php(56): eZ\Publish\Core\Persistence\Doctrine\DoctrineExpression->combine(Array, ' OR ')
#1 /var/www/eZ/530/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Persistence/Legacy/Content/Search/Common/Gateway/CriterionHandler/FullText.php(186): eZ\Publish\Core\Persistence\Doctrine\DoctrineExpression->lOr(Array)
#2 /var/www/eZ/530/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Persistence/Legacy/Content/Search/Common/Gateway/CriterionHandler/FullText.php(218): eZ\Publish\Core\Persistence\Legacy\Content\Search\Common\Gateway\CriterionHandler\FullText->getWordIdSubquery(Object(eZ\Publish\Core\Persistence\Doctrine\SubselectDoctrineQuery), '')

Steps to reproduce

1. Create a command that performs a search with a Criterion\FullText

   $filter = array(
   	'filter' => new Criterion\LogicalAnd( array(
   		new Criterion\FullText( $text ),
   		new Criterion\Subtree( $subtree )
   	) )
   );
     
   $query = new Query( $filter );
   

2. Execute the command with an empty value for $text

   php ezpublish/console teste:mysearch "" /1/2/12