api error (status = 400: api error (status = 500: 500 Can't connect to 10.0.10.32:8006 (SSL connect attempt failed error:0A000126:SSL routines::unexpected eof while reading) ))
That sounds like the remote that's trying to initialize the migrating is encountering an internal server error. Is there any more information in that host's logs that could give us a hint?
Going off this message alone, my guess would be that something about your network topology may have changed. The remote initializing the migration might not be able to reach another host on the IP 10.0.10.32 with port 8006 or is blocked before managing to establish a proper connection.