Failed Plugin Installation on 2nd Website

I am having trouble installing the WP Smush Pro on my other website - as it says that the "Destination folder already exists. /home/jwyatt1/public_html/wp-content/plugins/wpmudev-updates/" and so the Plugin install failed.

How do I get around this problem?

I would appreciate your urgent advice.

Many thanks and Kind Regards

Jacqui Wyatt