Players DarkRP HUD and mostly everything broken

Hi! some of my players gets this when they connect my server k, but some does not it only happends for like 60-70% of the servers population, have anyone the sligthest idea what might cause this? and how I can fix it.
“led usermessage 'DarkRP_PlayerVar’Warning: Unhandled usermessage ‘DarkRP_PlayerVar’”