Demonstration does not work for all examples on first page

[stweil]

The example Johannis Michaelis Dilherri, Franci, Disputationum Academicarum, praecipue Philologicarum, Tomus… does not work: No content is shown. Probably the OAI interface changed on the HAB side or it is broken. OAI reports an unknown identifier.

Ideally the DFG viewer should only show working examples.

[stweil]

Other examples on the demo page also don't work (e.g. those from SUB Göttingen).

[stweil]

Unrelated: typo on German demo page "in dem" => "indem".

[beatrycze-volk]

I have opened the given link and it works.

[stweil]

@beatrycze-volk, HAB seems to be fixed, but SUB Göttingen is still broken. Please reopen the issue.

[stweil]

ULB Halle is also broken.