MySQL Error!
MySQL error in file: /engine/modules/calendar.php at line 213
Error Number: 1055
The Error returned was:
Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
SQL query:

SELECT DATE_FORMAT(date,%b %Y) AS m_date, COUNT(id) AS cnt FROM dle_post WHERE approve=1 AND date < 2016-09-20 22:27:12 GROUP BY m_date ORDER BY date desc