[ome-users] Server error (500). Why is this displayed

[ingvar]

Hi,

I had a 500 error the other day.  In my case it was down to some 
malformed cookies.  Django makes a check for illegal characters in the 
file backend for sessions, and if formed throws an exception.

To check if your 500 error is due to same reason as mine, look for a 
line:

SuspiciousOperation: Invalid characters in session key

in the Django output.
This is described in:
http://trac.openmicroscopy.org.uk/ome/ticket/11281
https://code.djangoproject.com/ticket/19664
This has apparently been fixed in more recent versions of Django.

Clearing out my cookie cash solved the problem for me

/Ingvar

On 2014-06-06 09:34, John Webber (NBI) wrote:
> Hi,
> 
> I have built a new omero server, but during testing I sometimes see
> the following "Server Error (500)" screen when I log in. I am using
> Omero 4.4.8 with ice 3.3.
> 
> I notice that this seems to occur when I access the same user account
> from different computers or browsers. Is this because I have not
> logged out correctly from another sessions? Is there a way to remove
> the likelihood of users seeing this screen?
> 
> Thanks
> 
> John
> 
> -------------------------------------------------------------------------------------------------------------------------------------------- 
> 
> 
> John Webber
>  Computing and Information Services
> 
> NBI Partnership Ltd
> 
> Norwich Research park
> 
> Colney Lane
> 
> Norwich
> 
> NR4 7UH
> 
> E-Mail: john.webber at nbi.ac.uk
> 
> Web: http://www.nbi.ac.uk [1]
> 
> Tel: +44(0)1603 450 818
> 
> Helpdesk (Tel): 1234 HPC Support (Web): http://hpc.nbi.ac.uk [2] (NBI 
> internal)
> 
>  HPC Support (Tel): 2003 (NBI internal)
> 
> _The NBI Partnership Ltd provides non-scientific services to the
> Institute of Food Research, the John Innes Centre, The Genome Analysis
> Centre and The Sainsbury Laboratory_
> 
> 
> 
> Links:
> ------
> [1] http://www.nbi.ac.uk/
> [2] http://hpc.nbi.ac.uk/
> 
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-- 
Ingvar Lagerstedt
European Bioinformatics Institute (EMBL-EBI)
European Molecular Biology Laboratory
Wellcome Trust Genome Campus
Hinxton
Cambridge CB10 1SD

Tel: +44 (0)1223 492533