I’m trying to send a .zip file over to my (Linux AMI) EC2 instance via PuTTY, but I keep encountering error after error. So far, I’ve managed to clear other errors (trying to transfer it to ec2-user instead of root, wrong ip address, etc) but now I’m receiving a new error:

“Unable to initialise SFTP: could not connect”

I expected the files to transfer successfully, but an SFTP error was thrown in my face instead. As far as I’m aware, all the necessary ports should be open (22 & 443), the private key is correct… I’ve had no problems connecting to the instance in general, either, it’s transferring files that’s the only problem.

I can’t figure out what the problem is. Please advise.