OAI Harvester error message

Hello. I am trying to test the OAI Harvester plugin and received this error message. Error: RuntimeException: The configured PHP path (/usr/bin/php) does not point to a PHP-CLI binary. (2016-06-23 12:03:27)

Can anyone tell me how to proceed?
Thank you.

The harvester runs in the background, so it needs to know the path to the PHP executable on the server so it can run itself.

It’s saying that there’s not actually a PHP executable there at your configured/detected path (/usr/bin/php).

If you find your correct path, you can set it in application/config/config.ini on the background.php.path line.