sims 4 social interactions menu wont show up

I believe the issue is with KawaiiStacie Explore Mod.  I began having the same issue as you though I was still using the previous version to the 9/6 update and it was working fine for me until today.  I removed all groups of mods and narrowed it down to the KawaiiStacie mods and from there to the Explore Mod.  I stopped having the issue once I updated the Explore Mod with the 9/6 version.  I hope this helps you if you have not gotten a chance to figure it out yet.