C# Renci SshNet The server response contains a null character at position 0x0000002A

Question

i have multiple Raspberries running with SSH server: (OpenSSH_7.4p1 Raspbian-10+deb9u7, OpenSSL 1.0.2u 20 Dec 2019). And if i try to connect via Renci SshNet, i get the fol