I cannot tell you if it could be okay already. It is your server, you should know what you installed, shouldn't you?
So what works on local ready made server setups like MAMP:
Find your PHP version's `php.ini` file on your server and find something like `;extension=imagick.so`. If you find this, remove the `;`.
That would enable the extension if it is actually installed (which I cannot answer). You might need to restart your server.
Here my knowledge about servers ends. If that doesn't work, you need to install that extensions.