You don’t say what problem you are having.
As the code evolves installs can be a recurring problem, for example this episode
*SOLVED* Install.py now FAILS on Unbuntu 14.04, Debian 8, Centos 7. What happened? (also same on Ubuntu 16.04) *SOLVED*
This resource may help give you more perspective erpnext_admin_guide | ERPNext Administrators Guide