Install failed

[OuBi3n]

Hi all,

I would like to install the iframe plugin, so in the admin panle I choose plugins page, select new plugins -> source : rubygems -> nome gem : concerto_iframe.

I notice that the plugin source is present in the vendor directory.

When I validate the installation, I have an error :

1 error prevented this plugin from being saved:

Nome Gem concerto_iframe is not a valid rubygem

Thanks for the help.
Concerto: 2.3.6