Receiving "DONE is not an allowable request state." ERROR in my MetaMatrix Process log

Issue

• I see the below error occurring in the MMProcess.log file, but the Connector binding is returning query results with no errors.

• What does this error message mean?

   [Data Connector_1094|3552_Worker_652|0] ERROR <CONNECTOR|0> Data Connector_1094|3552_Worker_652 872714.78 DONE is not an allowable request state.
   MORE_WORK_SENDING  Start -> WORKING_SENDING  End -> IDLE_SENDING  Request -> MORE_WORK_SENDING  Start -> WORKING_SENDING 
   End -> IDLE_SENDING  Request -> MORE_WORK_SENDING  Start -> WORKING_SENDING  SentResults -> WORKING  Done -> DONE  Request ->