no access to site or wordpress control panel

Hello,

My website is down, and I am unable to access my wordpress control panel.

this error message appears on both my site and when i go to https://erinsexton.com/wp-login.php :

“/home/erinsext/public_html/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/product.photocrati_nextgen.php is not a valid Pope module”

I wish to disable this plugin, as I don’t believe I am using it, but have no access to do so. Is it possible for someone to disable it for me? Or is there another method I can use to access my wordpress control panel and try to fix this problem?

Thank you,
erin

The page I need help with: [log in to see the link]