Get specific Talk by id returns "Unknown internal error"

(1) I uploaded my own audio file via api post request to https://api.d-id.com/audios. I got a json result containing the URL to the created wav file.

(2) Then I created a talk using the API POST request to https://api.d-id.com/talks. I got a json result containing the ID of the talk.

(3) I wanted to get the url to the talk using the api GET Request: https://api.d-id.com/talks/tlk_RIua29Tm6ZhUEJIbAE8EG

But then I got an json response containing the error "Unknown internal error".

Please can you check this