Error message

tsdb.HandleRequest() error Get "http://localhost:8086/query?db=backbonestats&epoch=s&q=SELECT+last%28%22used_percent%22%29+FROM+%22swap%22+WHERE+time+%3E+now%28%29+-+5m+GROUP+BY+time%28200ms%29%2C+%22host%22+fill%28none%29": net/http: request canceled (Client.Timeout exceeded while awaiting headers)