Attachment button missing

Hi Support ,

we are facing attachment button was missing issue , we are just installed wpdiscuz and never use before. and we are found similar issues and solutions .

https://gvectors.com/forum/media-uploader/no-attachments-button/
https://wpdiscuz.com/community/f-a-q/if-attach-an-image-button-doesnt-work/

after we tried to setting at wp-admin>setting> URL to https: and also access wp-config.php but we didn’t found any 

wp_home
wp_siteURL 

only these showing.

<?php
define( ‘WP_CACHE’, true ); // Added by WP Rocket

set_time_limit(300);

 // Added by WP Rocket
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the
 * installation. You don’t have to use the web site, you can
 * copy this file to “wp-config.php” and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * MySQL settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://codex.ww.wp.xz.cn/Editing_wp-config.php
 *
 * @package WordPress
 */
/
/**
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.ww.wp.xz.cn/secret-key/1.1/salt/ ww.wp.xz.cn secret-key service}
 * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
 *
 * @since 2.6.0
 */

 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each
 * a unique prefix. Only numbers, letters, and underscores please!
 */
$table_prefix = ‘wo1_’;
define( ‘WP_DEBUG’, true );
define( ‘WP_DEBUG_DISPLAY’, false );
define( ‘WP_DEBUG_LOG’, true );
define( ‘DISABLE_WP_CRON’, true );
define( ‘DISALLOW_FILE_EDIT’, true );
/* That’s all, stop editing! Happy publishing. */
/** Absolute path to the WordPress directory. */
if ( ! defined( ‘ABSPATH’ ) ) {
define( ‘ABSPATH’, dirname( __FILE__ ) . ‘/’ );
}
/** Sets up WordPress vars and included files. */
require_once ABSPATH . ‘wp-settings.php’;