A Database Error Occurred

Error Number: 1055

Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'sigmaaka_v2.course_category.cc_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

SELECT * FROM `course_category` JOIN `course` ON `course`.`id` = `course_category`.`course_id` WHERE `course_category`.`category_id` IN('8') AND `course`.`status` = 'active' GROUP BY `course`.`id`

Filename: models/Course_model.php

Line Number: 58