How can I solve this problem?
Downloading installation package from https://transvelo.github.io/included-plugins/revslider.zip…
Unpacking the package…
Installing the plugin…
Destination folder already exists. /var/www/wp-content/plugins/revslider/
Plugin installation failed.
Did you check this ? Slider revolution installation guide!
Thanks for using Slider Revolution. Please refer to this article https://www.sliderrevolution.com/faq/how-to-fix-destination-folder-already-exists-installation-issue/ that explains about this. If you need further assistance, you can email us at email@example.com