Usage: rethinkdb export [-c HOST:PORT] [-p] [--password-file FILENAME] [--tls-cert filename] [-d DIR]
      [-e (DB | DB.TABLE)]...
      [--format (csv | json | ndjson)] [--fields FIELD,FIELD...] [--delimiter CHARACTER]
      [--clients NUM]

rethinkdb-export: error: Unable to connect to server: Could not connect to localhost:28015. Error: [Errno 111] Connection refused