Sprwt could not create or find the Root Planner customer (or Sprwt-location record) for that order, so it could not attach the order to anyone. Usually a "Customer Create - …" or "Customer Update - …" error row appears just above it with the reason Root Planner returned (for example an invalid token, a rejected email/phone or an incomplete address). Fix the customer's or pickup location's details in Sprwt (or link the correct record in Root Planner Customer / Root Planner Location), then export again.