I've been trying to add a JSON file containing fields with coordinates (not sure if that is the only criteria for calling JSON files GeoJSON). This JSON file comes from an external real-time server but is saved locally. The steps I took are as: My content > Add item > From my computer. Everytime I try to add the concerning JSON file, it says: "invalid url". Extra information: the JSON file is a saved output from the HERE Traffic REST API. The corresponding URL to get the output contains parameters like the desired incidents categories, bounding box, and the API ID and key.