STRDS endpoint missing for API version 3.8.0 (maybe core version 7.0.1)

[ninsbl]

My actinia installation with API version 3.8.0 and core version 7.0.1 seems to be missing the STRDS endpoint. I get a 404 error (URL not found) for my installation:
http://my.actinia.no/api/v3/locations/ETRS_33N/mapsets/Sentinel_3_SLSTR_FSC_1day/strds)

Here is the version response:

{
  "api_version": "3.8.0",
  "grass_version": {
    "build_date": "2025-11-03",
    "build_off_t_size": "8",
    "build_platform": "x86_64-pc-linux-gnu",
    "date": "2025",
    "gdal": "3.11.4",
    "geos": "3.14.1",
    "libgis_date": "2025-10-17T14:54:12+00:00",
    "libgis_revision": "85b38da2a3",
    "proj": "9.7.0",
    "revision": "94cb16472d",
    "sqlite": "3.45.1",
    "version": "8.5.0dev"
  },
  "plugin_versions": {
    "actinia_metadata_plugin": "1.0.4",
    "actinia_module_plugin": "2.9.0",
    "actinia_satellite_plugin": "0.3.0",
    "actinia_stac_plugin": "0.4.0",
    "actinia_statistic_plugin": "0.4.0",
    "actinia_tiling_plugin": "1.2.0"
  },
  "plugins": "actinia_metadata_plugin,actinia_module_plugin,actinia_satellite_plugin,actinia_stac_plugin,actinia_statistic_plugin,actinia_tiling_plugin",
  "python_version": "3.12.3 (main, Aug 14 2025, 17:47:21) [GCC 13.3.0]",
  "version": "7.0.1"
}

Testing against the mundialis demo installation, all works fine but that installation runs API version 3.6.0 and core version 5.1.0, which seems to be the main relevant differences.
Try: https://actinia.mundialis.de/api/v3/locations/ETRS_33N/mapsets/Sentinel_3_SLSTR_FSC_1day/strds

Any idea where to start debugging? Any changes from API 3.6.0 to 3.8.0 or core 5.2.0 to 7.0.1 that may affect the endpoint availability?