Update and Lost Plugin

Just updated the plugin and WordPress and the plugin disappeared from my list of installed. No calendar on the website (http://childrensmuseumofil.com/events/), not in the list of plugins.

Went to reinstall and got the following message:
Installing Plugin: The Events Calendar 4.0.4
Downloading install package from https://downloads.wordpress.org/plugin/the-events-calendar.4.0.4.zip…

Unpacking the package…

Installing the plugin…

Destination folder already exists. /www/wp-content/plugins/the-events-calendar/

Plugin install failed.

Return to Plugin Installer

Suggestions appreciated – we have an event on New Year’s Eve and we need to get it back online ASAP.

Thanks!

https://wordpress.org/plugins/the-events-calendar/