For Photo Gallery and Geo Traffic components, you will need to have GD graphics library compiled in your PHP configuration, either Version 1.6.2, 2.0 or above.

GD graphics library is used for image manipulation using PHP code such as auto thumbnail creation, image resize, add copyright text and graph generation.

To check if you have GD graphics library enabled, use the phpinfo() function. Or if you already have the One Admin files uploaded to your web server, you can access the URL http://your_domain.com/oneadmin/phpinfo.php with your browser.

Below are the screen shots to show that you have the required GD graphics library running.







Read More :
- How to compile GD graphics library with PHP?