and the link you provided still returns 404 error.
Its not so much the link thats the issue its the plugin causing the site to get 524 error.
Plugin is still causing 524 error for some reason.
Went to BuddyBoss: Connections: Circle and added Circles to Menu.
1. Cause 524 error than recovered. Second issue the link was incorrect also. went to https://friends/circle
Getting 524 error when I added menu link.
I tried adding a menu link to Cirlces, thats when issue started.