Can't instal because of "image manuplation availabel"

I can not pass setup screen because one of the required option is not available. It is image manupaltion available.
For this As I understand I need to setup GD on server I have ubuntu and php7.0
so I install with;
sudo apt-get install php7.0-gd
and I restart server.
Still I can not go forward for setup concrete5 because of this.
I can see php7.0-gd is there also there is another file "20-gd.ini" with;
apt list --installed
but in phpinfo it show gd is not enabled.
Is there any idea to help?

View Replies:
Gondwana replied on at Permalink Reply
I think the extension needs to be made visible to php. An executable may need to be saved in a directory that php know about, and you'll probably need something in php.ini to point to it.