Not Found The requested URL was not found on this server. Apache/2.4.41 (Ubuntu) Server

                                    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..

                                    excute this command to edit apache conf file of your server.

nano /etc/apache2/apache2.conf

And Kindly find this section and update this.
from

<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>

Then apache2 restart
sudo service apache2 restart

End. Hope it works well.

                                    its very helpful for you