Error in installing new plugins from plugin gallery installed plugins

I am trying to install new plugin from plugin gallery, but when i click on install there is window " are you sure you want install this plugin" i clicked on “Okay”
But nothing happened. How to fix this issue.

If OJS is on the server, you need to install “untar” for unzipping .tar.gz otherwise nothing will happen. I have already solved the problem manually, because automatically on hosting is not received.
see here Install plugin theme manual

How do I install “untar”?

Hi @Ovande_Furtado,

See e.g. The tar command is not available. Please correctly configure it in your "config.inc.php".

Regards,
Alec Smecher
Public Knowledge Project Team