# Customize search on express object breaks the site!

**URL:** <https://forums.concretecms.org/t/customize-search-on-express-object-breaks-the-site/9638>\
**Category:** Using Concrete / Help\
**Tags:** bug\
**Created:** [December 10, 2025, 12:26pm UTC](https://forums.concretecms.org/t/customize-search-on-express-object-breaks-the-site/9638 "2025-12-10T12:26:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![allams](https://forums.concretecms.org/user_avatar/forums.concretecms.org/allams/32/5178_2.png) [@allams](https://forums.concretecms.org/u/allams)\
**Post date:** [December 10, 2025, 12:26pm UTC](https://forums.concretecms.org/t/customize-search-on-express-object-breaks-the-site/9638/1 "2025-12-10T12:26:27Z")

</div>

I am using Concrete 9.4.7, just upgraded to see if it fixed this issue (it didn’t). Also PHP 8.5.0RC5

I have a very simple Express object, and when I go to Customise the Search/Listing, and make any changes there, the whole system fails with an error page - with the main error being:

Call to a member function setValue() on null

Pointing to file:/var/www/concrete/src/Attribute/Category/AbstractCategory.php:171  
Line is:  
`return $this->getAttributeKeyRepository()->findOneBy(`

I first tried this on a complex object, but now on one with only 3 attributes. The issue affects all 3 sites in the multi-site, so is a rather serious result from clicking a single checkbox!

I have got the system back by removing the custom result\_column from the database, but figuring out which table changed last and guessing what default would be from looking at other entries…

update ExpressEntities set result\_column\_set = ‘N;’ where handle=‘int\_event’;

I would like to be able to modify the search/listing however. Has anyone else seen this issue?

Thanks,

Steve