warning notice on every page after update

[123yvonnick]

WORDPRESS 4.8.1
BUDDYPRESS 291
THEME WOFFICE

I have updated WordPress today and Buddypress then this appeared:

Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in…wp-includes/class-wp-hook.php on line 298 appearing on the bottom of each page.

I still get the notice when I upload older versions.

How can I remove this warning?

Thanks!

[r-a-y]

It's probably a problem with either your theme or a plugin conflict.

Can you please post this in the support forums?
​https://buddypress.org/support

If you've already made a topic, then please provide a link.

Try switching your theme to a WordPress default theme and see if your problem still exists. If it still exists, it is probably a problem with a specific plugin. You'll have to do some A/B testing by disabling all your plugins and reactivating them one-by-one.