501: command command fails: "" is not a valid directory name

Explanation

The FTP server received a command containing a pair of quotation marks (""), indicating an empty quoted string as a directory argument, but "" is not a valid directory name.

command is the command that specified the "" directory name.

System action

The command is rejected. Control returns to the client for further command processing.

User response

Reissue the command with a valid directory name.

System programmer response

None.