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

Martin Morris martinbmorris at gmail.com
Sat Nov 11 08:11:22 NZDT 2023

Hello Katrin,

Thanks for your help.  I edited koha-conf.xml in /etc/koha/sites/<instance>/koha-conf.xml, so I think that’s the right place?

I’m also using 2FA in case that helps.


- - - - - -

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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