This could be due to several reasons:
* Limited information: The film might be relatively obscure, and information about the cast may be scarce.
* Changes in database records: Cast information could have been lost or incomplete over time.
* European film history: European films from this era might have less complete records compared to Hollywood productions.
To find the cast information, you may need to:
* Consult specialized film archives: Research institutions or libraries specializing in German film history may have access to more detailed records.
* Search for German-language film resources: Websites or books dedicated to German cinema might contain the missing information.
* Reach out to film historians or experts: Academics specializing in German film history could potentially have knowledge of the film's cast.
Good luck with your research!