Pablo,
Is there anything in the error logs for demo.bibkat.no relating to the 500 error?
If there is nothing then the 500 response might be an internal LWP::UserAgent response on the validator server - possibly something like an issue setting up HTTPS e.g. mismatch in TLS versions; no shared ciphers; non-trusted (by the validation server) root certificate (looks like demo.bibkat.no uses Let's Encrypt certs).
There may be a difference in what curl and LWP::UserAgent is using for the https setup?
I also note that the 'Identify' response from: https://demo.bibkat.no/cgi-bin/koha/oai.pl?verb=Identify uses a different base URL in it's response:
<request verb='Identify'>https://demo.bibkat.no/opac/oai.pl</request>
<Identify>
<repositoryName>Demo</repositoryName>
<baseURL>https://demo.bibkat.no/opac/oai.pl</baseURL>
…
</Identify>
I don't think this would generate the 500 error, but it would create a different validation error.
Cheers,
John
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baseURL is https://demo.bibkat.no/cgi-bin/koha/oai.pl
Validation only
Request logged from 128.84.116.66
The OAI-PMH data provider with base URL https://demo.bibkat.no/cgi-bin/koha/oai.pl has failed initial validation. Problems reported must be corrected before validation can continue.
Tue Feb 1 13:45:40 2022baseURL is https://revistas.unc.edu.ar/index.php/ConCienciaSocial/oai
Validation only
Request logged from 128.84.116.66
The OAI-PMH data provider with base URL https://revistas.unc.edu.ar/index.php/ConCienciaSocial/oai has passed initial validation. An email message has been sent to the administrator's email address shown above which includes a URL to continue validation and/or registration. The purpose of this email step is to ensure that only the administrator can change the registration record of a date provider, and to avoid the possibility of excessive use of the validation script against a data provider by some third party.
Tue Feb 1 13:48:18 2022