Db::fetch_func error could not call user-supplied function

[dranzers]

I have code like this:

$sql = "SELECT id_cp_mk id, id_mk mataKuliahId, deskripsi, deskripsi_inggris deskripsiEn , bobot, urutan
FROM cp_mk WHERE id_mk = :idmk ";
$query = $this->db->query($sql, ['idmk' => $id]);
$result = $query->fetchAll(Db::FETCH_FUNC, array(RencanaEvaluasiMk::class, 'buildFromPdo'));

and function static

class RencanaEvaluasiMk {

public static function buildFromPdo( $id, $mataKuliahId, $deskripsi,
$deskripsiEn, $bobot, $urutan )
{
$this->id = new RencanaEvaluasiMkId($id);
$this->mataKuliahId = new MataKuliahId($mataKuliahId);
$this->deskripsi = $deskripsi;
$this->deskripsiEn = $deskripsiEn;
$this->urutan = $urutan;
$this->bobot = $bobot;
}
}

then i'm get error
could not call user-supplied function

how to fix this. ?