Multisite Shared Menu With BuddyPress Gives Warnings

[marypearson]

I installed Multisite Shared Menus and all works well on main domain and six of my seven sub-domains, but on my Dating Service, when a logged in member clicks on “Members” we get a list of about 20 lines of the same warning as follows:

Warning: in_array() expects parameter 2 to be array, null given in /plugins/buddypress/bp-core/bp-core-filters.php on line 199

I am using WP 4.8, BP 2.8.2, GeneratePress Child Theme, but the issue is also there using Twenty-Sixteen

I have deleted BP and reinstalled but it didn’t help. I am currently hiding the warning in config.php but would like to fix it instead of just hiding it.

I have requested help from several sources but none have been able to fix the problem.

Can you give me some idea of how I might resolve this please.
Thank you!