[chrishajer]

While this looks ugly, they’re just PHP warnings. PHP error messages and warnings should not be visible on a production webserver anyway. They are there because of a problem with the bbPress code and the way it is interacting with your server, but they are not preventing you from going further. If you suppress the PHP warnings (maybe you have access to your .htaccess file) you will be blissfully unaware of the warnings.

https://bbpress.org/forums/topic/php-error-messages?replies=16#post-13128