404 Not Found The requested URL was not found on this server

In Ubuntu I did not found httpd.conf, It may not exit longer now. Edit in apache2.conf file working for me.

cd /etc/apache2
sudo gedit apache2.conf

Here in apache2.conf change

<Directory /var/www/>
     Options Indexes FollowSymLinks
     AllowOverride None
     Require all granted
</Directory>

to

<Directory /var/www/>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
</Directory>  

i was spend lots of time in this after then i found ...solution

first -
sudo a2enmod rewrite


sudo systemctl restart apache2

this line depends on your apache2 version you found on your console copy and past ...

      sudo nano /etc/apache2/sites-available/000-default.conf


     DocumentRoot "/var/www/html"
    <Directory "/var/www/html">
            Options FollowSymLinks
            AllowOverride All
            Require all granted
    </Directory>

change this

Include conf/extra/httpd-vhosts.conf

to

#Include conf/extra/httpd-vhosts.conf

and restart all services

In httpd.conf file you need to remove #

#LoadModule rewrite_module modules/mod_rewrite.so

after removing # line will look like this:

LoadModule rewrite_module modules/mod_rewrite.so

I am sure your issue will be solved...