I am getting 421 Clear Text Session Error in FTP [ Filezilla ]

Error :

421 Clear Text Session

Solution :

This is because you are trying to connect as plain text instead of FTPES. Please choose FTPES in ftp mode.

Kindly refer the below Procedure,

Go to filezilla

Click on File >> Site Manager
Click on New Site option
Supply the following details
Host : ftp.yourdomain.com or server IP
port : 21
server type : FTPES – FTP over explicit TLS/ SSL
{
Note: If you are using latest version of fiezilla,
Protocol: FTP-File Transfer Protocol
Encryption: Require explicit FTP over TLS.
}
Logon Type : Normal
User : your ftp user name
password : your ftp password

Click on connect