Yunohost encountered an internal error :/

Bonsoir,

en voulant faire une mise à jour, j’ai ce message :

Yunohost encountered an internal error :/
Really sorry about that.
You should look for help on the forum or the chat to fix the situation, or report the bug on the bugtracker.
The following information might be useful for the person helping you :

Action
PUT /update
{"locale":"en"}
Traceback
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/moulinette/interfaces/api.py", line 406, in process
    ret = self.actionsmap.process(arguments, timeout=30, route=_route)
  File "/usr/lib/python2.7/dist-packages/moulinette/actionsmap.py", line 495, in process
    return func(**arguments)
  File "/usr/lib/moulinette/yunohost/tools.py", line 425, in tools_update
    if not cache.update():
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 443, in update
    raise FetchFailedException(e)
FetchFailedException: W:GPG error: http://http.debian.net jessie-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010, W:Failed to fetch http://repo.yunohost.org/debian/dists/jessie/Release.gpg  Cannot initiate the connection to repo.yunohost.org:80 (2a03:7220:8080:5c00::1). - connect (101: Network is unreachable) [IP: 2a03:7220:8080:5c00::1 80]
, W:Failed to fetch http://repo.yunohost.org/debian/dists/jessie/stable/binary-armhf/Packages  Cannot initiate the connection to repo.yunohost.org:80 (2a03:7220:8080:5c00::1). - connect (101: Network is unreachable) [IP: 2a03:7220:8080:5c00::1 80]
, W:Failed to fetch http://repo.yunohost.org/debian/dists/jessie/stable/i18n/Translation-en  Cannot initiate the connection to repo.yunohost.org:80 (2a03:7220:8080:5c00::1). - connect (101: Network is unreachable) [IP: 2a03:7220:8080:5c00::1 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

Ah, ok, je vois que le problème est là : Mise à jour Yunohost impossible

For people not reading french, it means:

The repo server is currently down. The developers, and the team behind YunoHost is aware.

I just encountered this same error. Is this a yearly recurring issue?