Internal Server Error when calling the `.../<identifier>/document_annotations` API route

[fmaschhur]

In some cases, calling the .../<identifier>/document_annotations API route throws an Internal Server Error. One of these cases is the lotto privacy policy, which can be found under .../tasks/60d08460e26c9b911f6c81a8 with the corresponding API route being .../api/task/60d08460e26c9b911f6c81a8/document_annotations.

[fmaschhur]

Trying out a few other privacy policies (facebook, fresenius medical care and bnp_paribas) yields the same result.