Error with filters

-- HikaShop version -- : 2.5.0
-- Joomla version -- : 3.4.1
-- PHP version -- : 5.4.42
-- Error-message(debug-mod must be tuned on) -- : 1140

Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause SQL=SELECT DISTINCT b.product_id,max(b.familia) as max_testfamilia_3, min(b.familia) as min_testfamilia_3 FROM nvb4t_hikashop_product_category AS a LEFT JOIN nvb4t_hikashop_product AS b ON a.product_id=b.product_id WHERE b.product_published=1 AND b.product_type = 'main' AND a.category_id IN (12,18,19,2) AND (b.product_access = 'all' OR b.product_access LIKE '%,1,%') ORDER BY a.ordering ASC

Hello, I´m trying to use filters in the site and when I turn on the module the page have an error. Could you help me. Regards,

Leo.

Hi, see attached. Regards, Leo.

See the attachment. Regards. Leo.

We need your help as soon as possible because We need to launch next week.
When we activate the filters this error is showing:

1140
MIXING OF GROUP COLUMNS (MIN(),MAX(),COUNT(),...) WITH NO GROUP COLUMNS IS ILLEGAL IF THERE IS NO GROUP BY CLAUSE SQL=SELECT DISTINCT B.PRODUCT_ID,MAX(B.VEHICULO) AS MAX_TESTFAMILIA_3, MIN(B.VEHICULO) AS MIN_TESTFAMILIA_3 FROM NVB4T_HIKASHOP_PRODUCT_CATEGORY AS A LEFT JOIN NVB4T_HIKASHOP_PRODUCT AS B ON A.PRODUCT_ID=B.PRODUCT_ID WHERE B.PRODUCT_PUBLISHED=1 AND B.PRODUCT_TYPE = 'MAIN' AND A.CATEGORY_ID IN (12,18,19,2) AND (B.PRODUCT_ACCESS = 'ALL' OR B.PRODUCT_ACCESS LIKE '%,2,%') ORDER BY A.ORDERING ASC

Regards. Leo.

Everything works fine.

I created a new filter and now the "vehicle" field appears. (the problem was editing an old filter).

How do I create a link that includes a filter element to a custom field? Ex. I have a "vehicle" model "brand" and need the link to display all items custom field "vehicle" model "brand".

Regards, Leo.