Error when logged in on bbpress pages

Hi,

Your plugin seems to work great for us, but we get one error message (top of screen) once a user is logged in.

Deprecated: stripos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /home/2190910945/public_html/wp-content/plugins/bbp-members-only/bbp-members-only.php on line 302

Is this something that can be fixed easy?

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