KControllerExceptionResourceNotFound [404]

Category not found
.../components/com_docman/views/list/html.php:166
161             else $category = $this->getModel()->fetch();
162         }
163         else $category = $parent;
164 
165         if ($state->isUnique() && $category->isNew()) {
166             throw new KControllerExceptionResourceNotFound('Category not found');
167         }
168 
169         //Subcategories
170         if ($params->show_subcategories)
171         {