KeyError: 'MetaDataAccess'

[frafra]

Hi! I get a KeyError: 'MetaDataAccess':

2022-10-28 14:12:24,836 ERROR [ckan.config.middleware.flask_app] 'MetaDataAccess'
Traceback (most recent call last):
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/flask/app.py", line 1949, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/flask/app.py", line 1935, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/lib/ckan/venv/src/ckanext/ckanext-oaipmh/ckanext/oaipmh/blueprints.py", line 39, in b2find_oai
    res = serv.handleRequest(parms)
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 314, in handleRequest
    return self.handleException(request_kw, sys.exc_info())
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 326, in handleException
    self._tree_server.handleException(value).getroot(),
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 311, in handleRequest
    return self.handleVerb(verb, request_kw)
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 318, in handleVerb
    return etree.tostring(method(**kw).getroot(),
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 131, in listRecords
    self._outputResuming(
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 206, in _outputResuming
    result, token = input_func(**kw)
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/common.py", line 126, in method
    return obj(self, **kw)
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/common.py", line 121, in __call__
    return bound_self.handleVerb(self._verb, kw)
  File "/usr/lib/ckan/venv/lib/python3.8/site-packages/oaipmh/server.py", line 427, in handleVerb
    result = method(**kw)
  File "/usr/lib/ckan/venv/src/ckanext/ckanext-oaipmh/ckanext/oaipmh/oaipmh_server.py", line 465, in listRecords
    data.append(self._record_for_dataset_dc(package, set_spec))
  File "/usr/lib/ckan/venv/src/ckanext/ckanext-oaipmh/ckanext/oaipmh/oaipmh_server.py", line 333, in _record_for_dataset_dc
    base_url, identifier = self._provinfo(extras['MetaDataAccess'][0])
KeyError: 'MetaDataAccess'