Fatal error: Uncaught mysqli_sql_exception: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'rincova2.areas_grado.idArea' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by in /PASTO_EDU/html/rincova/nivel.php:74
Stack trace:
#0 /PASTO_EDU/html/rincova/nivel.php(74): mysqli_query()
#1 {main}
thrown in /PASTO_EDU/html/rincova/nivel.php on line 74