Help Please Menu Bar Empty needle

<b>Warning</b>: strstr(): Empty needle in <b>/home
i see this messages in menu bar .even in google when im looking for my website
and this show only when i choose groups ,activity or my members.
also i can’t see the forums in the dashboard. And i can’t make new forums or delete .the host company who make me the community lazy to help me i need help please and thank you for everyone offers help my wordpress version
i have tried everything to stop all plugins and to change for the old theme.

WordPress 4.2.2 running Hello Egypt theme
buddypress Version 2.3.2.1

bbPress 2.5.7.

sorry for my bad englisgh
https://helloegypt.souqhurghada.com/groups/

[bumps moderated]