Check ListRecords of DH-oaipmh
See: “Line 3423, Column 0, Element '{http://www.openarchives.org/OAI/2.0/}setSpec': 'hdl:21.T11991/0000-001C-9DC0-8' is not a valid value of the atomic type '{http://www.openarchives.org/OAI/2.0/}setSpecType'.“
Multiple times!