Floating Social – Non-static method Wdsb_PublicPages::serve() should not be called statically

I’m getting the following error message on every pageview. Can you assist?

Error message

Error: Non-static method Wdsb_PublicPages::serve() should not be called statically

Sample stack trace

… called at /home/hidden/public_html/wp-content/plugins/sharebox/

sharebox.php (78)

in include_once called at /home/hidden/public_html/wp-settings.php (273)

in require_once called at /home/hidden/public_html/wp-config.php (72)

in require_once called at /home/hidden/public_html/wp-load.php (39)

in require_once called at /home/hidden/public_html/wp-blog-header.php (13)

in require called at /home/hidden/public_html/index.php (17)