Illegal Characters Error

Hello,

I’m getting the following error on my WordPress dashboard:

The session id is too long or contains illegal characters, valid characters are a-z, A-Z, 0-9 and '-,' in /nas/wp/www/cluster-41579/celdf/wp-content/plugins/wonderm00ns-simple-facebook-open-graph-tags/wonderm00n-open-graph.php on line 1009

This just started.

https://wordpress.org/plugins/wonderm00ns-simple-facebook-open-graph-tags/