file-export problem

[Seyed Noorollah Aghayenoor]

Hello, i execute file-export command according to help message but i got error

here is my command:
riot file-export -h <host> -p <port> -a <pass> /var/hash_registry/packages/hashes_db.json
and i get following error:

Error: expected only one match but got [[-c] [--resp=<ver>] [-u=<uri> | -h=<host> | -p=<port> | -s=<socket> | --user=<name> | -a[=<password>] | --timeout=<sec> | -n=<db> | --client=<name> | --tls | --insecure] [[--cert=<file>] [--key=<file>] [--key-pass[=<pwd>]] [--cacert=<file>]]]={--host=...} and [[-c] [--resp=<ver>] [-u=<uri> | -h=<host> | -p=<port> | -s=<socket> | --user=<name> | -a[=<password>] | --timeout=<sec> | -n=<db> | --client=<name> | --tls | --insecure] [[--cert=<file>] [--key=<file>] [--key-pass[=<pwd>]] [--cacert=<file>]]]={--port=6379} and [[-c] [--resp=<ver>] [-u=<uri> | -h=<host> | -p=<port> | -s=<socket> | --user=<name> | -a[=<password>] | --timeout=<sec> | -n=<db> | --client=<name> | --tls | --insecure] [[--cert=<file>] [--key=<file>] [--key-pass[=<pwd>]] [--cacert=<file>]]]={--pass}

Any idea?