when providing type information, the dev server responds with a 500 (see attached files). The error was initially reported in https://github.com/EEXCESS/eexcess/issues/28 [q1.txt](https://github.com/EEXCESS/recommender/files/92055/q1.txt) [r1.txt](https://github.com/EEXCESS/recommender/files/92054/r1.txt)