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[EP-tech] Eprints Bazaar and "Unknown dataset: epm"



Hi David,

This is due to the code where the EPM data object is defined not being 
included.? You may need to edit the file:

EPRINTS_PATH/flavours/pub_lib/inc

and add the line:

ingredients/bazaar

That said, I have checked backed and both EPrints 3.4 original release 
(i.e. 3.4.0) and 3.4.3 both have this line.? Although the way the inc 
file is defined in 3.4.0 is semi-colon rather than new line separated 
for different paths in this inc file.? If you do have an inc file that 
looks like:

flavours/pub_lib;site_lib;ingredients/bazaar;

It may be worth changing this to:

flavours/pub_lib
site_lib
ingredients/bazaar

In fact, if you do not have an EPRINTS_PATH/site_lib/ directory, I would 
remove that line altogether.? I am pretty sure using the semi-colon 
separated syntax still works but it is worth eliminating all possible 
differences.? I assume you have a? non-empty directory at 
EPRINTS_PATH/ingredients/bazaar/?? Also if you have mlocate install on 
your operating system it is worth checking that the following file 
exists and where it is located, (it should be at 
EPRINTS_PATH/ingredients/bazaar/plugins/EPrints/DataObj/EPM.pm):

locate DataObj/EPM.pm

I have also written some instructions for upgrading between versions of 
3.4 at:

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.eprints.org%2Fw%2FUpgrading_between_EPrints_3.4_versions&data=04%7C01%7Ceprints-tech%40ecs.soton.ac.uk%7C53a9de291dab45409f9508da0c28ec1d%7C4a5378f929f44d3ebe89669d03ada9d8%7C0%7C0%7C637835667133529415%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=GuursTyurw0FGyr4cNSk0UpL%2BQlLYH03RnlggeAHfaA%3D&reserved=0

This may provide some assistance, although it does not make any 
reference to the specific issue you reported.

Regards

David Newman

On 22/03/2022 17:05, David Kane via Eprints-tech wrote:
> *CAUTION:* This e-mail originated outside the University of Southampton.
>
> Hello Folks,
>
> I have just upgraded from Eprints 3.4 to 3.4.3 and the Eprints Bazaar 
> admin page gives an internal server error.? The apache log displays 
> ?Unknown dataset: epm?.? I have no idea why this is happening.? Can 
> anyone help point me in the right direction.? I have spent far to long 
> trying to figure out this alone.
>
> Thanks,
>
> David.
>
>
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