Unknown SSL protocol error in connection to updates.nextcloud.com:443

Hi, I can’t update:
it seams to me, that something is wrong on the server side, because it was working last time:

root@srv1:/var/www/cloud.mydom.info/cloud# sudo -u web2 php7.1 updater/updater.phar 
Nextcloud Updater - version: v14.0.2RC2-1-g21ab216

Current version is 14.0.3.

                                                                                                                  
  [Exception]                                                                                                     
  Could not do request to updater server: Unknown SSL protocol error in connection to updates.nextcloud.com:443   
                                                                                                                  

update

root@srv1:/var/www/cloud.mydom.info/cloud# curl --verbose https://updates.nextcloud.com
* Rebuilt URL to: https://updates.nextcloud.com/
*   Trying 88.198.160.138...
* Connected to updates.nextcloud.com (88.198.160.138) port 443 (#0)
* found 148 certificates in /etc/ssl/certs/ca-certificates.crt
* found 603 certificates in /etc/ssl/certs
* ALPN, offering http/1.1
* gnutls_handshake() failed: Error in the pull function.
* Closing connection 0
curl: (35) gnutls_handshake() failed: Error in the pull function.

they had also a server problem on this error message: https://github.com/zendesk/zendesk_api_client_php/issues/334

Oh - and I have the problem on a different server too :frowning:

Sometimes I also just get

Failed to connect to updates.nextcloud.org port 443: Connection timed out