BuddyPress was updated to version 2.8.1, from version 2.8.0. Changelog:

• Groups: Fix bug in the syntax of a apply_filters_ref_array() call.
• XProfile: Fix regression in 2.8.0 that prevented some XProfile Dashboard panels from being accessed in certain cases.
• Members: Fix bug that caused debug notice when activating users who registered prior to BuddyPress being activated.
• Core: Improve PHP 7.1 compatibility.
• Core: Fix regression that caused deprecated code not to be loaded in certain cases.