Column not found: 1054 Unknown column 'categories.deleted_at' in 'where clause'

[michaelqxd]

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'categories.deleted_at' in 'where clause' (SQL: select (select count(1) from categories as c1, categories c2 where categories.deleted_at is null and c1.id < c2.id and (c1._lft=c2._lft or c1._rgt=c2._rgt or c1._lft=c2._rgt or c1._rgt=c2._lft)) as duplicates limit 1) D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Connection.php:750 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Connection.php:706 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Connection.php:349 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php:1614 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php:1600 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php:1583 D:\wamp64\www\app\app\src\Model\nestedset\QueryBuilder.php:611 D:\wamp64\www\app\app\src\Model\nestedset\QueryBuilder.php:742 D:\wamp64\www\app\app\src\Model\nestedset\QueryBuilder.php:754 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php:3489 D:\wamp64\www\app\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php:3503 D:\wamp64\www\app\app\test\src\nestedset\NodeTest.php:122 D:\wamp64\www\app\app\test\src\nestedset\NodeTest.php:122