Cannot connect to ftp server ... need hints

ftp 8081
Connected to
220 (vsFTPd 3.0.3)
Name ( crio-user
331 Please specify the password.
421 Service not available, remote server has closed connection
Login failed.
No control connection for command: Success

Ftp Login Failed already posted same issue.

what will be the solution then … i have set the port to 8081

Make sure your conf file is running