Fatal error: Uncaught mysqli_sql_exception: Expression #1 of ORDER BY clause is not in SELECT list, references column 'shantidevi.product_images.pro_img_id' which is not in SELECT list; this is incompatible with DISTINCT in /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/drivers/mysqli/mysqli_driver.php:179 Stack trace: #0 /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/drivers/mysqli/mysqli_driver.php(179): mysqli_query() #1 /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/DB_driver.php(454): CI_DB_mysqli_driver->_execute() #2 /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/DB_driver.php(300): CI_DB_driver->simple_query() #3 /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/DB_active_rec.php(963): CI_DB_driver->query() #4 /home/shantidevicollege/htdocs/shantidevicollege.org/application/models/common_model.php(724): CI_DB_active_record->get() #5 /home/shantidevicollege/htdocs/shantidevicollege.org/application/controllers/welcome.php(116): Common_model->get_gallery_groups() #6 /home/shantidevicollege/htdocs/shantidevicollege.org/system/core/CodeIgniter.php(359): Welcome->gallery_images() #7 /home/shantidevicollege/htdocs/shantidevicollege.org/index.php(315): require_once('...') #8 {main} thrown in /home/shantidevicollege/htdocs/shantidevicollege.org/system/database/drivers/mysqli/mysqli_driver.php on line 179