FTP Put Error flow dont start anymore

5 Oct 14:29:31 - Error: getaddrinfo ENOTFOUND ftp://hostname:21
at errnoException (dns.js:50:10)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:92:26)

I tried to send a file via ftp to an ftp server.
But now the flow dont start anymore and i get this message.
Somebody know how to fix this?
Im using this Node.

If you do a google search for "getaddrinfo ENOTFOUND" it will tell you what the error means and the first return also explains the main causes of that error

from the information you have supplied it could be any of them. So you will need to work your way through them

But where i need to edit it?
The flow i can not start anymore.

The name and location of the flow is listed in the command line text when you start Node-RED

alternatively if you look in your .node-red directory there is a hidden file (starts with a ".") which is your previous flows file

Okay Thank you.