Why can't I access localhost?
I am trying to access localhost on my xampp via the web browser on Chrome but I get this error message:

    Object not found!
    
    The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.
    
    If you think this is a server error, please contact the webmaster.
    
    Error 404

Apache and MySQL are turned on so I don't understand. 

This is my hosts file:

    127.0.0.1       localhost
    127.0.0.1       itutormaths.web
    127.0.0.1       itutormaths.mod
    127.0.0.1       itutormaths.hub
    127.0.0.1       my.itm

This is my virtual hosts file:

    <VirtualHost *:80>
        ServerAdmin postmaster@dummy-host.localhost
        DocumentRoot "C:/xampp/htdocs/dummy-host.localhost"
        ServerName dummy-host.localhost
        ServerAlias www.dummy-host.localhost
        ErrorLog "logs/dummy-host.localhost-error.log"
        CustomLog "logs/dummy-host.localhost-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
    ServerAdmin postmaster@itutormaths.mod
        DocumentRoot "C:/xampp/htdocs/my/"
        ServerName itutormaths.mod
       ServerAlias www.itutormaths.mod
        ErrorLog "logs/itutormaths.mod-error.log"
        CustomLog "logs/itutormaths.mod-access.log" combined
    </VirtualHost>
    
    
    <VirtualHost *:80>
    ServerAdmin postmaster@itutormaths.hub
        DocumentRoot "C:/xampp/htdocs/launcher/public_html/"
        ServerName itutormaths.hub
       ServerAlias www.itutormaths.hub
        ErrorLog "logs/itutormaths.hub-error.log"
        CustomLog "logs/itutormaths.hub-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
        ServerAdmin postmaster@itutormaths.web
        DocumentRoot "C:/xampp/htdocs/website/httpdocs"
        ServerName itutormaths.web
        ServerAlias www.itutormaths.web
        ErrorLog "logs/itutormaths.web-error.log"
        CustomLog "logs/itutormaths.web-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
        ServerAdmin postmaster@my.itm
        DocumentRoot "C:/xampp/htdocs/my/"
        ServerName my.itm
        ServerAlias www.my.itm
        ErrorLog "logs/my.itm-error.log"
        CustomLog "logs/my.itm-access.log" combined
    </VirtualHost>

The only one that works is itutormaths.hub, I get that error when I type in localhost, itutormaths.mod, itutormaths.web or my.itm
Why can't I access localhost?
===

I am trying to access localhost on my xampp via the web browser on Chrome but I get this error message:

    Object not found!
    
    The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.
    
    If you think this is a server error, please contact the webmaster.
    
    Error 404

Apache and MySQL are turned on so I don't understand. 

This is my hosts file:

    127.0.0.1       localhost
    127.0.0.1       itutormaths.web
    127.0.0.1       itutormaths.mod
    127.0.0.1       itutormaths.hub
    127.0.0.1       my.itm

This is my virtual hosts file:

    <VirtualHost *:80>
        ServerAdmin postmaster@dummy-host.localhost
        DocumentRoot "C:/xampp/htdocs/dummy-host.localhost"
        ServerName dummy-host.localhost
        ServerAlias www.dummy-host.localhost
        ErrorLog "logs/dummy-host.localhost-error.log"
        CustomLog "logs/dummy-host.localhost-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
    ServerAdmin postmaster@itutormaths.mod
        DocumentRoot "C:/xampp/htdocs/my/"
        ServerName itutormaths.mod
       ServerAlias www.itutormaths.mod
        ErrorLog "logs/itutormaths.mod-error.log"
        CustomLog "logs/itutormaths.mod-access.log" combined
    </VirtualHost>
    
    
    <VirtualHost *:80>
    ServerAdmin postmaster@itutormaths.hub
        DocumentRoot "C:/xampp/htdocs/launcher/public_html/"
        ServerName itutormaths.hub
       ServerAlias www.itutormaths.hub
        ErrorLog "logs/itutormaths.hub-error.log"
        CustomLog "logs/itutormaths.hub-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
        ServerAdmin postmaster@itutormaths.web
        DocumentRoot "C:/xampp/htdocs/website/httpdocs"
        ServerName itutormaths.web
        ServerAlias www.itutormaths.web
        ErrorLog "logs/itutormaths.web-error.log"
        CustomLog "logs/itutormaths.web-access.log" combined
    </VirtualHost>
    
    <VirtualHost *:80>
        ServerAdmin postmaster@my.itm
        DocumentRoot "C:/xampp/htdocs/my/"
        ServerName my.itm
        ServerAlias www.my.itm
        ErrorLog "logs/my.itm-error.log"
        CustomLog "logs/my.itm-access.log" combined
    </VirtualHost>

The only one that works is itutormaths.hub, I get that error when I type in localhost, itutormaths.mod, itutormaths.web or my.itm