On Saturday 08 of September 2018 22:02:22 Diego Vadell wrote:
> Hi,
>
>     I wanted to update trinity today (Ubuntu 18.04) and got this
> message:
>
> Err:7 http://mirror.xcer.cz/trinity-sb bionic InRelease
>   403  Forbidden [IP: 91.241.23.210 80]
> Hit:8 https://packages.cisofy.com/community/lynis/deb stable InRelease
> Reading package lists... Done
> E: Failed to fetch
> http://mirror.xcer.cz/trinity-sb/dists/bionic/InRelease 403  Forbidden
> [IP: 91.241.23.210 80]
> E: The repository 'http://mirror.xcer.cz/trinity-sb bionic InRelease'
> is no longer signed.
>
> I went to the wiki (Preliminary Stable Builds) and rerun the GPG key
> import, but it looks like I already had it:
>
>   sudo apt-key adv --keyserver pool.sks-keyservers.net --recv-key
> A04BE668 Executing: /tmp/apt-key-gpghome.fCUStJLtMA/gpg.1.sh
> --keyserver pool.sks-keyservers.net --recv-key A04BE668
> gpg: key 608F5293A04BE668: 7 signatures not checked due to missing keys
> gpg: key 608F5293A04BE668: "Sl�vek Banko <slavek.banko@...>" not
> changed gpg: Total number processed: 1
> gpg:              unchanged: 1
>
>
> Is everybody able to update?
>
> Thanks in advance,
>  -- Diego.

There seems to be something wrong with mirror.xcer.cz - I reported it to 
my colleague who is the administrator of this server.

Please use the second mirror - instead of the server name mirror.xcer.cz 
enter the server name mirror.ppa.trinitydesktop.org.

Cheers
-- 
Sl�vek