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='289ce72e-4c52-344a-87db-215c1bc66d35' ORDER BY id_smt DESC )