The Key
Thank you very much, now it works fine!
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
The answer is:
"Host key does not match configured key ""ssh-ed25519 256 xirJmD/0DgUenJZ7msgH+jEsE+1J/QbYK7rQu0ZpFV8=""!"
"Host key fingerprint is ssh-ed25519 256 xirJmD/0dgUenJZ7msgH+jEsE+1J/QbYK7rQu0ZpFV8=."
The String contains:
mySessionOptions.SshHostKeyFingerprint
= "ssh-ed25519 256 xirJmD/0DgUenJZ7msgH+jEsE+1J/QbYK7rQu0ZpFV8="
"Host key does not match configured key ""ssh-ed25519 256 xirJmD/0DgUenJZ7msgH+jEsE+1J/QbYK7rQu0ZpFV8=""!"
"Host key fingerprint is ssh-ed25519 256 xirJmD/0dgUenJZ7msgH+jEsE+1J/QbYK7rQu0ZpFV8=."
"Authentication failed."
Session.SessionLogPath
. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.