Orangescrum official tutorial for centos 7 doesn't work.

[Brief-Wishbone9091]

Open Source Project Management Software Installation Guide | Orangescrum

Orangescrum open source project management software and task management tool written using CakePHP. Check the detailed information and requirements before installation of Orangescrum.

www.orangescrum.com

I tried to download using this automated setup but it doesn't work.
It stops at here:

Unable to install MySQL Server, please try again
[root@localhost orangescrum-main]#

Can you suggest me a good tutorial to install orangescrum?