Vapor / cURL error while deploying

On my Homestead, 8.1.0 box. I am just trying Vapour out. Created a clean Laravel 6.0 installation and have been following the documentation. It runs all the composer and npm stuff correctly, but I keep on run into

Client error: `PUT https://vapor-eu-central-1-1 .... resulted in a `400 Bad Request` response:            
  <?xml version="1.0" encoding="UTF-8"?>                                                                                                                                             
  <Error><Code>RequestTimeout</Code><Message>Your socket connection to the server w (truncated...)

Curl should be able to handle SSL. This is the output

curl --version
curl 7.47.0 (x86_64-pc-linux-gnu) libcurl/7.47.0 GnuTLS/3.4.10 zlib/1.2.8 libidn/1.32 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp 
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP UnixSockets

Does anyone experience this as well and have a solution ?