Array ( [err] => Array ( [error] => ERROR: invalid input syntax for uuid: "" LINE 1: ...ct distinct id_smt from kelas_kuliah where id_sms='' and id_... ^ [no] => -1 ) [sql] => select distinct id_smt from kelas_kuliah where id_sms='' and id_mk='f0a0e084-9545-3419-bfc4-03c3b01b49ec' ORDER BY id_smt DESC )