JUser::_load: Unable to load user with id jomsocial shSEF404 joomla

Installed jomosocial & ShSEF404 components on Joomla site & getting "JUser::_load: Unable to load user(userid)" error, when you view some jomsocial profiles on site.
To solve this issue i did following things hope it will work in your case too.
Go to sh404SEF -> Control panel -> Url Manager.
Search the Jomsocial username's for which you are getting this problem. You can search one username at a time it will be more diffcult if you encounter this problem with large number of profiles.
You will get the list of url related to that profile, look at 'Duplicates' column. Remove those rows where you can see the duplicate values.
Go to the frontend do hard refresh & error will be disabled.
Writtng this post specifically cause if you googled this errror you get most of the nonsense things & waste time while doing that things as i did.