Internal Server Error for tiled "Issues Geojson" endpoint

[tyrasd]

For example, requesting http://osmose.openstreetmap.fr/api/0.3/issues/14/13702/7517.geojson?item=1070 results in a HTTP/500 (Internal Server Error) error, while the same request in the mvt format (http://osmose.openstreetmap.fr/api/0.3/issues/14/13702/7517.mvt?item=1070) works fine. From what I can see, when the tile does not contain any data, it returns an empty feature collection as expected (e.g. http://osmose.openstreetmap.fr/api/0.3/issues/14/13702/7517.geojson?item=1040).

Further, the non-tiled bbox-based endpoint for geojson exports is working as expected, e.g.: https://osmose.openstreetmap.fr/api/0.3/issues.geojson?item=1070&bbox=121.06,14.65,121.07,15.66