[Koha] Issue logging into staff interface [Plack log complains about missing encryption key]

Katrin Fischer katrin.fischer.83 at web.de
Sat Nov 11 08:02:41 NZDT 2023

Hi Martin,

in which file did you replace it?

You were on the right track there, but make sure to add the entry to the
koha-conf.xml file used by your koha instances/sites. You might have
changed the template instead of the used file.

Hope this helps,


On 10.11.23 16:02, Martin Morris wrote:
> Hello all,
> I’m having trouble logging into our staff interface this morning.  Here’s what’s happening:
>    *   I’m running koha 23.05.04
>    *   I get an Error 500 page after putting in my credentials
>    *   The only error message I can see in any log file is in plack-error.log
>       *   Exception 'Koha::Exceptions::MissingParameter' thrown 'No encryption_key in koha-conf.xml. Please generate a key. We recommend one of at least 32 bytes. (You might use 'pwgen 32' to do so.)'
>    *   I currently have the following line in my koha-conf.xml file, as the last entry before </config>
>       *   <!-- Added 1 Nov 2022 from warning in About page
> -->
> <encryption_key>__ENCRYPTION_KEY__</encryption_key>
> <!-- Added 1 Nov 2022 from warning in About page
> -->
>    *   I’ve tried generating a password with ‘pwd 32’, copying the first entry and replacing __ENCRYPTION_KEY__ with that entry, and have rebooted, but it didn’t make any difference so I reverted.
> Is this a bug?  A known issue?
> Thanks in advance!
> Martin
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