anvil connect errors

[NagarajuKasa]

I am trying to install anvil single sign on in the ubuntu 12.04

i have followed the steps as per the document Installed Packages in my system as mentioned below:-
node: v6.11.0
npm: 5.3.0
OpenSSL 1.0.1 14 Mar 2012
Git: git version 1.7.9.5
Redis server version 2.2.12 (00000000:0)

Now i would like to install the anvil application at /var/www/ in the name of 'anvilproject'

As per this screenshot http://prntscr.com/gacvgd i am getting the below errors in detailed i have mentioned in the screenshots.

Screenshots:-
Step 1:-
http://prntscr.com/gactqu

Step 2:-
http://prntscr.com/gacv3l

Step 3:-
http://prntscr.com/gacv8v

Please suggest where i did the mistake ? please confirm me whether steps i have followed correct or not?
thanks

[christiansmith]

Looks like you're missing g++ for compiling bcrypt. This won't be an issue in future versions, as we're moving to bcryptjs. In the meantime, can you try the following and see if it helps?

sudo apt-get install build-essential 
sudo apt-get install g++