Swarakalibata Marketplace - Penambahan Rekening di Admin error

Assalamualaikum,.. ini untuk swarakalibata marketplace ya mas?
coba buka file "application/controllers/administrator.php", cari script berikut :
function tambah_rekening(){
    cek_session_akses('rekening',$this->session->id_session);
    if (isset($_POST['submit'])){
        $this->model_rekening->rekening_tambah();
        $data = array('nama_bank'=>$this->db->escape_str($this->input->post('a')),
                    'no_rekening'=>$this->db->escape_str($this->input->post('b')),
                    'pemilik_rekening'=>$this->db->escape_str($this->input->post('c')));
        $this->model_app->insert('rb_produk',$data);
        redirect('administrator/rekening');
    }else{
        $this->template->load('administrator/template','administrator/additional/mod_rekening/view_rekening_tambah');
    }
}
 
Kemudian ubah menjadi :
 
function tambah_rekening(){
    cek_session_akses('rekening',$this->session->id_session);
    if (isset($_POST['submit'])){
        $data = array('nama_bank'=>$this->db->escape_str($this->input->post('a')),
                    'no_rekening'=>$this->db->escape_str($this->input->post('b')),
                    'pemilik_rekening'=>$this->db->escape_str($this->input->post('c')));
        $this->model_app->insert('rb_rekening',$data);
        redirect('administrator/rekening');
    }else{
        $this->template->load('administrator/template','administrator/additional/mod_rekening/view_rekening_tambah');
    }
}