Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'pgc_id' in where clause is ambiguous' in /mnt/morningletter/www/pcenter/common/class/DB/PDO.ppw:74 Stack trace: #0 /mnt/morningletter/www/pcenter/common/class/DB/PDO.ppw(74): PDOStatement->execute(Array) #1 /mnt/morningletter/www/pcenter/common/class/PAPA/Program.ppw(1058): DB_PDO->execQuery('SELECT * FROM ...', Array) #2 /mnt/morningletter/www/pcenter/new2020/program/list.ppw(36): PAPA_Program->getProgramCategoryOnList('1', 8, Array, 'ASC') #3 {main} thrown in /mnt/morningletter/www/pcenter/common/class/DB/PDO.ppw on line 74