The filename http://bit.ly/2V2jcNZ is not readable in codeigniter

I try to read and fetch data from excel sheet using phpexcel in Codeigniter. but I get the error The filename http://working.abc.co.in/abc/zyx/demo.xlsx is not readable

Controller code

public function index()
{       
$this->load->view('admin/welcome_message');
}

    function import2(){

    move_uploaded_file($_FILES["file_name"]["tmp_name"], "abc/xyz/". $_FILES["file_name"]["name"]);

    $file_path=base_url("abc/xyz/".$_FILES["file_name"]["name"]);           

         @chmod($file,0777);
         $this->load->library('Spreadsheet_Excel_Reader');
         $this->spreadsheet_excel_reader->setOutputEncoding('CP1251');
        $this->spreadsheet_excel_reader->read($file);    
        $sheets=$this->spreadsheet_excel_reader->sheets[0];
        error_reporting(E_ALL ^ E_NOTICE);
        $excelarray=array();
        for ($i = 1; $i <= $data->$sheets['numRows']; $i++) {
        $excelarray['name']=$sheets['cells'][$i][1];
        $excelarray['phone']=$sheets['cells'][$i][2];
        }
    print_r($excelarray);
    $this->load->view('super_admin/welcome_message');
    }