MySQL_class: Database Error occured!

 CODE: 1055
 DESC: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'couriers_courierv5_db.rates.service_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
 FILE: eaglecorv5.php
QUERY: select country_id,service_id,range_price from rates where status='Y' and deleted='N' group by country_id limit 5
 QCNT: 4
 INFO: QueryResult('select country_id,service_id,range_price from rates where status='Y' and deleted='N' group by country_id limit 5 ') failed!

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PHP v5.6.40 / MySQL Class v0.36