Hey @LBIGsest55 welcome to the community
are you able to connect directly to that FTP-Server from the host? please try connecting to the FTP-Sever using a browser from the nextcloud host or using the shell.
this log error seems to imply that missing arguments… can you tell us more about the target FTP service? assuming the FTP service is running on a different host in your network, is that host and service available at all?
prefer using SFTP since that only requires SSH and is far easier to configure without additional services see