Setting up openssh-server (1:5.3p1-3ubuntu7) ...
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend will not work on a dumb terminal, an emacs shell buffer, or without a controlling terminal.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (This frontend requires a controlling tty.)
debconf: falling back to frontend: Teletype
start: Job failed to start

Setting up ssh (1:5.3p1-3ubuntu7) ...

Errors were encountered while processing:
 dropbear
E: Sub-process /usr/bin/dpkg returned an error code (1)