<diagnostics>
    <diagnostic xmlns="http://www.loc.gov/zing/srw/diagnostic/">
        <details>
            <url>http://sru2.visual-library.de/doiresolver?operation=searchRetrieve&amp;query=rec.identifier%3D12345&amp;recordSchema=mods</url>
            <headers><header name="ACCEPT" value="*/*"/><header name="ACCEPT-ENCODING" value="gzip, br, zstd, deflate"/><header name="CONNECTION" value="Keep-Alive"/><header name="COOKIE" value="session_id=8d7d18dcd870ef1b33ab1ef57e226c6cae1ee0b5"/><header name="HOST" value="sru2.visual-library.de"/><header name="Remote-Addr" value="192.168.1.13"/><header name="USER-AGENT" value="Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"/><header name="X-FORWARDED-FOR" value="216.73.216.81"/><header name="X-FORWARDED-HOST" value="sru2.visual-library.de"/><header name="X-FORWARDED-SERVER" value="sru2.visual-library.de"/></headers>
            <params><param name="operation" value="searchRetrieve"/><param name="query" value="rec.identifier=12345"/><param name="recordSchema" value="mods"/></params>
            <traceback>Traceback (most recent call last):
  File "/vls/instance/server/dynamic/vlz/engine2.py", line 272, in searchRetrieve
    return self._searchRetrieve(*args, **kwargs)
  File "/vls/instance/server/dynamic/vlz/engine2.py", line 407, in _searchRetrieve
    fetchResult = protocolHandler.fetchRecords(**fetchKwars)
  File "/vls/instance/server/dynamic/vlz/fetchers.py", line 195, in fetchRecords
    numrecs, records = self._fetchRecords(startRecord=startRecord, maxRecords=maxRecords)
  File "/vls/instance/server/dynamic/vlz/fetchers.py", line 430, in _fetchRecords
    resp = self.retrieveUrl(url)
  File "/vls/instance/server/dynamic/vlz/utils.py", line 409, in __call__
    return self.urlread(url)
  File "/vls/instance/server/dynamic/vlz/utils.py", line 395, in urlread
    (result.status_code, url))
RemoteAuthError: remote server responds with code 404 to get-request for url https://api.crossref.org/works/12345/agency
</traceback>
            <additional><name>RemoteAuthError</name><provider>doiresolver</provider><protocol>JSON</protocol><mdrevision>0</mdrevision><host>https://api.crossref.org</host><database>works/%(doi)s/agency</database><recordSyntax>CRJSON</recordSyntax><targetRecordSyntax>MODS</targetRecordSyntax><area>searchRetrieve.fetchRecords</area></additional>
            <exception><class class="RemoteAuthError" module="vlz.utils"/><message>RemoteAuthError: remote server responds with code 404 to get-request for url https://api.crossref.org/works/12345/agency
</message><args arg0="remote server responds with code 404 to get-request for url https://api.crossref.org/works/12345/agency"/></exception>
        </details>
        <message>An error has occured: RemoteAuthError - remote server responds with code 404 to get-request for url https://api.crossref.org/works/12345/agency</message>
    </diagnostic>
</diagnostics>