Error-Message can't connect to Dropbox

Hi,

the following problem: I installed your plugin, like I did on all my other websites (3), and when I try to connect it to the dropbox following Error-Message occurs:

Dropbox-API: (59) Unknown cipher in list: ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:ECDHE-RSA-RC4-SHA:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-

I have no Idea what this means or what the problem is. It’s the same dropbox I use on my other websites with your plugin – there is plenty of free space on my dropbox.

So please let me know how I can save this problem.

Thanks, Martina

https://ww.wp.xz.cn/plugins/backwpup/