Codeigniter 3 : 404 page error, .htaccess not working

Question

It may old and regular query about Codeigniter + 404 page error. I have tried answered from previous stackoverflow questions about this. But, I couldn't solve my problem.
I have copied Codeigniter project from another system (Ubuntu OS 64 bit) to Ubuntus OS system. But, I am getting 404 page as default.If I give http://localhost/project/index.php/admin/login its working but not http://localhost/project/admin/login or http://localhost/project .
Here are my configuration: config.php

    $config['base_url'] = 'http://localhost/html/project';

    $config['modules_locations'] = array(
        APPPATH.'modules/' => '../modules/',
    );
    $config['index_page'] = '';
    $config['uri_protocol'] = 'AUTO'; 

And my .htaccess file:

Options FollowSymLinks
<IfModule mod_rewrite.c>
    RewriteEngine on

    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule> 
<IfModule !mod_rewrite.c>
    ErrorDocument 404 /index.php
</IfModule> 

Answer 1

Check if mod rewrite is on. If you are using apache2:

sudo a2enmod rewrite

Then restart apache.

sudo service apache2 restart

Answer 2

try rewriting it like this:

<IfModule mod_rewrite.c>

    RewriteEngine On
    RewriteBase /

    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.php controller,
    #previously this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]

    #When your application folder isn't in the system folder
    #This snippet prevents user access to the application folder
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]

    #Checks to see if the user is attempting to access a valid file,
    #such as an image or css document, if this isn't true it sends the
    #request to index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed, all 404's
    # can be sent to index.php, and everything works as normal.

    ErrorDocument 404 /index.php
</IfModule>