no npc in worlds

Do you have mods installed? I had this happen after installing UNI_FIX_MissingScienceProfessor.rar. Deleting it solved the issue for me.

no i dont use mods 

karen038​  As a test,  please try playing in a clean user folder.  Move the entire Sims 3 folder out of Documents > Electronic Arts and onto your desktop.  When you open the launcher, a clean folder will spawn with no content.  (Your saves and other content, if you have any you want to preserve, will be intact in the folder you've moved but temporarily unread by the game.)  Don't add anything to the new folder yet; just start a new save and see whether the NPCs show up.

Hi thank you for your advice but that hasn't worked but thank you tho 

I have now solved the issue I uninstalled the ea app and reinstalled and everything working now thank you for the help