Check the server configuration.
1. Check the following URL:
http://host:port/xtend/page?site=Site&fldr=Dossier&sol=Solution&lang=Langue
2. Check the port number
Defined in the server configuration
3. Check that the X3 folder has been published on the X3WEB server
4. Check that the site is published.
5. Process a complete validation of the site