Blank pada halaman administrator, marketplace swarakalibata

Assalamualaikum,.. buka file application->controllers->Administrator.php
ganti dari:
function home(){
        if ($this->session->level=='admin'){
		  $this->template->load('administrator/template','administrator/view_home_admin');
        }elseif ($this->session->level=='kontributor'){
          $data['users'] = $this->model_app->view_where('users',array('username'=>$this->session->username))->row_array();
          $data['modul'] = $this->model_app->view_join_one('users','users_modul','id_session','id_umod','DESC');
          $this->template->load('administrator/template','administrator/view_home_users',$data);
        }
	}
ke :
function home(){
        if ($this->session->has_userdata('username'))
        {
            if ($this->session->level=='admin'){
            $this->template->load('administrator/template','administrator/view_home_admin');
            }elseif ($this->session->level=='kontributor' || $this->session->level=='user'){
            $data['users'] = $this->model_app->view_where('users',array('username'=>$this->session->username))->row_array();
            $data['modul'] = $this->model_app->view_join_one('users','users_modul','id_session','id_umod','DESC');
            $this->template->load('administrator/template','administrator/view_home_users',$data);
            }
        } 
        else {redirect($this->uri->segment(1));}
	}

Assalamualaikum,.. tetep mas, awalnya saja setelah diklik transaksi langsung blank..

Assalamualaikum,.. kalau udah diganti tetap blank gmn ya gan>?

    Assalamualaikum,.. cek versi PHP, maksimal PHP 7.2
    dan pastikan juga komputernya terkoneksi ke internet.pengalaman pribai hehehehe

Assalamualaikum,.. udah di cek gan,  xamppny sesuai yg di rekomendasikan , internet aktif. masih blank gtu gan

Assalamualaikum,.. Pastikan untuk mencoba per-akunnya pake 1 browser,
jadi tiap akun beda browser, sepertinya ada session yg bentrok,.. hee

Assalamualaikum,.. bisa gan beda browser, tapi agar di buka 1 browser apa yang dirubah ya gan?