koushikchere on "[Plugin: Wordfence Security] Can't go the Options of Wordfence"

I can't go to the options menu after activating the Plugin, it showing me -
Fatal error: Out of memory (allocated 9175040) (tried to allocate 122880 bytes) in /home2/rpmhandi/public_html/wp-includes/user.php on line 1715

-please, help

https://wordpress.org/plugins/wordfence/