Urgent problem

I have a problem with NextGen plugin, I have had this piece of code at the top of my website page for about a month now. I have checked the Database and according to the check results the database has no issues.

Strict Standards: Redefining already defined constructor for class nggdb in /homepages/28/d134160259/htdocs/.blushingblooms/wp-content/plugins/nextgen-gallery/lib/ngg-db.php on line 60

Strict Standards: Redefining already defined constructor for class nggPostThumbnail in /homepages/28/d134160259/htdocs/.blushingblooms/wp-content/plugins/nextgen-gallery/lib/post-thumbnail.php on line 26

Strict Standards: Redefining already defined constructor for class nggNavigation in /homepages/28/d134160259/htdocs/.blushingblooms/wp-content/plugins/nextgen-gallery/lib/navigation.php on line 50

I am now unable to get to the Dashboard I can go to the login page but when I click login I get a blank page with the code above at the top.
Any recommendations on what to do. I need to update the site urgently.