error after delete

Hi all,

when i'am delete on grid, data show error :

error :

{"success":true,"success_message":"

Your data has been successfully deleted from the database.<\/p>"}

my controller:

public function add_master_barang()
       {
        try{
            $crud = new grocery_CRUD();

            $crud->set_theme('flexigrid');
            $crud->set_table('master_barang');
            
                //dropdownlist satuan
                //https://stackoverflow.com/questions/25670147/grocery-crud-field-type-dropdown-with-custom-array-data
                $this -> db -> select ('code,description');               
                $this->db->where('fk_lookup_grp =3');
                $query = $this -> db -> get('lookup');
                $finalArray = array();
                foreach ($query->result_array() as $row)
                {
                $finalArray[$row['code']] = $row['description']; 
                }

                //dropdownlist satuan
                $this -> db -> select ('ID_SUPPLIER,PERUSAHAAN');
                $query = $this -> db -> get('supplier');
                $supplierArray = array();
                foreach ($query->result_array() as $row)
                {
                $supplierArray[$row['ID_SUPPLIER']] = $row['PERUSAHAAN']; 
                }

            $crud->field_type('satuan','dropdown', $finalArray);
            $crud->field_type('supplier','dropdown', $supplierArray);
            $crud->required_fields('kode_barang','nama_barang','satuan','netto','supplier');    
           // $crud->unset_jquery();
           // $crud->unset_jquery_ui();
            $output = $crud->render();
            $output->title = "Form Input Master Barang";
            $output->meta_keywords = "Something 2";
            $this->_example_output($output);

        }catch(Exception $e){
            show_error($e->getMessage().' --- '.$e->getTraceAsString());
        }
    }

in database data success to delete,

any idea for this problem?

mascha

Amit Shah