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Manually create wp-config.php file and past the code which looks like this and re-install the same it will work.

<?php
/**
 * 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.wordpress.org/Editing_wp-config.php
 *
 * @package WordPress
 */

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'landdb');

/** MySQL database username */
define('DB_USER', 'root');

/** MySQL database password */
define('DB_PASSWORD', '');

/** MySQL hostname */
define('DB_HOST', 'localhost');

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8mb4');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');

/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the @link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org 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
 */
define('AUTH_KEY', '>-QGUoR0nVWO9 rl=XOk/yn[sZf=[HcZk8@J6Icm/:p#z+4jmJF]n~6m2y?n,TV');
define('SECURE_AUTH_KEY', '0Sq%,SJ5KP.=Ln]UuPF8k<Zo]X]7^4;VT5q%UITl,!{7w2QM');
define('LOGGED_IN_KEY', 'A[sS*[ksr2!qf8G`=&3Z)=vOJGd%X|7k=49s9BZ7k|n7j_WhHPGw*SP.o]wvufKIfn0s4.=Ln]UuPF8k<Zo]X]7^4;VT5q%UITl,!{7w2QM');
define('LOGGED_IN_KEY', 'A[sS*[ksr2!qf8G`=&3Z)=vOJGd%X|7k=49s9BZ7k|n7j_WhHPGw*SP.o?W`#');
define('NONCE_KEY', '71xg#3i$Q)L aybW9KPvsRZ&PaV#[[Lc# # 6Q<Mk*7Pi6W(Qh`t$^s>/S:aT>z');
define('AUTH_SALT', 'qa-S$)X)-C(&~:TPD~WQlX,q788*NBCN_:3jGmr@X/yn[sZf=[HcZk8@J6Icm/:p#z+4jmJF]n~6m2y?n,TV');
define('SECURE_AUTH_KEY', '0Sq%,SJ5KP.=Ln]UuPF8k<Zo]X]7^4;VT5q%UITl,!{7w2QM');
define('LOGGED_IN_KEY', 'A[sS*[ksr2!qf8G`=&3Z)=vOJGd%X|7k=49s9BZ7k|n7j_WhHPGw*SP.o{?W`#');
define('NONCE_KEY', '71{xg#3i$Q)L aybW9KPvsRZ&PaV#[[Lc# # 6Q<Mk*7Pi6W(Qh`t$^s>/S:aT>z');
define('AUTH_SALT', 'qa-S$)X)-C(&~:TPD~WQlX,q788*NBCN_:3jGmr@X|@iAOAZ`~igO3>)Z+L[xQQr');
define('SECURE_AUTH_SALT', 'mXE7Glb~H)O<GgBXMJ.e( 5kjw4Wd<vgFLu5eCp%n03 e-&;5mL5J,aQ.M*RY7n8GtoN0aj-jzXC<');

/**#@-*/

/**
 * 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 = 'wp_';

/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 *
 * For information on other constants that can be used for debugging,
 * visit the Codex.
 *
 * @link https://codex.wordpress.org/Debugging_in_WordPress
 */
define('WP_DEBUG', false);

/* That's all, stop editing! Happy blogging. */

/** 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');