ExecJS::RuntimeUnavailable in el7

[saghoshprogress]

Hi Team,
i am getting an error of ExecJS::RuntimeUnavailable while trying to run the rake assets:precompile in el7. I am using
gem 'execjs', "~> 2.7.0"

gem 'mini_racer', "~> 0.3.1"

My GCC version
gcc --version
gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44)

I am using a little older version as el7 does not support the latest GCC. Let me know if you need any further information.

Thanks,