[horde] Open a PDF logging me out

[Arjen de Korte]

Citeren Simon B <simon.buongiorno at gmail.com>:

> On Wed, 10 Jul 2019 at 18:23, Andreas Mauser <andreas at mauser.info> wrote:
>
>> Hello,
>>
>> when I want to open a PDF Horde says its corrupt and then logs me out.
>>
>> Is this known? Do I just need to install another package?
>>
>>
>>
> I have a similar issue - but it is in my relatively outdated git-clone,
> which I have not been able to update, since the git change was made (yes, I
> know, I am not happy, but I do not have time either).
>
> A fatal error has occurredUndefined class constant 'ALPHACHANNEL_REMOVE'in
> ../imp/lib/Mime/Viewer/Pdf.php:136
>
> 1. Horde_ErrorHandler::catchFatalError()
>
> DetailsThe full error message is logged in Horde's log file, and is shown
> below only to administrators. Non-administrative users will not see error
> details.
>
> ErrorException Object
> (
>     [message:protected] => Undefined class constant 'ALPHACHANNEL_REMOVE'
>     [string:Exception:private] =>
>     [code:protected] => 0
>     [file:protected] => ../imp/lib/Mime/Viewer/Pdf.php
>     [line:protected] => 136
>     [trace:Exception:private] => Array
>         (
>             [0] => Array
>                 (
>                     [function] => catchFatalError
>                     [class] => Horde_ErrorHandler
>                     [type] => ::
>                     [args] => Array
>                         (
>                         )
>
>                 )
>
>         )
>
>     [previous:Exception:private] =>
>     [severity:protected] => 1
>     [logged] => 1
>
> )
>
> It is not there in the production version I am using (older than the GIT
> version, so something was introduced...)

Search the archives for the class constant, as this has been reported  
(and answered) several times already. It boils down to the fact that  
the version of the imagick library you're using is *very* outdated.

> Regards
>
> Simon