Hi Jean,
There is an important library that is missing on your CentOS 6.8: the `libc.so.6(glibc_2.14)(64bit)` library.
Unfortunately there is no such package for Centos6, you can verified at the link below:
* https://pkgs.org/download/libc.so.6(GLIBC_2.14)(64bit)
It seems like you have installed ** EPEL 7.0 repository** on this Centos 6.8 .
Try to remove that, it should normally fix that issue. And test again.