Conveyor submitter fts error message wrong
Motivation
----------
In https://github.com/rucio/rucio/blob/b8a77623801da54c88b249fbc643657a0a04453d/lib/rucio/core/transfer.py#L576 the error message says the fts host is missing for the source, while it should say it is missing for the destination.
diff --git a/lib/rucio/core/transfer.py b/lib/rucio/core/transfer.py
index 118f0fa24..2f72d8ac9 100644
--- a/lib/rucio/core/transfer.py
+++ b/lib/rucio/core/transfer.py
@@ -573,7 +573,7 @@ def get_transfer_requests_and_source_replicas(total_workers=0, worker_number=0,
                 # get external_host
                 fts_hosts = rse_attrs[dest_rse_id].get('fts', None)
                 if not fts_hosts:
-                    logging.error('Source RSE %s FTS attribute not defined - SKIP REQUEST %s' % (rse, req_id))
+                    logging.error('Destination RSE %s FTS attribute not defined - SKIP REQUEST %s' % (dest_rse, req_id))
                     continue
                 if retry_count is None:
                     retry_count = 0
['lib/rucio/core/transfer.py']