Install Xibo On Redhat 7 virtual machine

Hello I followed the procedure https://community.xibo.org.uk/t/installation-guide-of-xibo-1-8-on-centos-7/9429?source_topic_id=9666 but when I run the setup of xibo in the browser I do not have the window Welcomethe the xibo installation but I have the contents of the web folder. It seems to me that I do something wrong. I’m not what it is.