Database query error. The error was: errno : 1055 Expression #101 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'redanime_pautalo2_princ.class_slugs.slug' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
SQL query/queries : select class_ads.*, class_ads.id as adid, date_format(class_ads.`date_added`,'%b %d, %Y') as date_nice, date_format(class_ads.`date_expires`,'%b %d, %Y') as date_expires_nice, UNIX_TIMESTAMP(class_ads.`date_added`) as `time_added`, (class_ads.date_expires < '2019-04-20 09:37:09' and class_ads.date_expires!='0000-00-00 00:00:00' and class_ads.active=0) as expired, class_slugs.slug from class_ads left join class_categories_lang on class_categories_lang.id = class_ads.category_id left join class_slugs on class_ads.id=class_slugs.object_id where class_ads.active=1 and class_ads.category_id in (118,108,117,116,115,114,113,110,119,112,109,107) and class_slugs.`type`='listing' group by class_ads.id order by date_added desc limit 0, 20
Error path: pautalo.com.co/107-electronicos-informatica/listings.html