Fixed route problem

1. Check if apache is configured to support .htaccess.
Code:
<Directory "/var/www/html">
    Options Indexes FollowSymLinks
    AllowOverride All
    Order allow,deny
    Allow from all
</Directory>

2. Put below .htaccess under xxxx-xxx folder if not exists or correct it if as per below example
Code:
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /CI220-CRUD/
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>

3. Make sure, base_url config variable under config.php is set to as per below example
Code:
$config['base_url']    = 'http://localhost/xxxx-xxx';

4. Make sure, index_page config variable under config.php is set to blank (Just check below example)
Code:
$config['index_page'] = '';