Client error: `GET https://delta-v-ng.fact-finder.de/fact-finder/rest/v4/navigation/deltav_be?channel=deltav_be&event=navigation&sid=gjq40ol07it2am3ncphnh8td1r&format=json&query=&filter=CategoryPath%3ABureau-stoelen&filter=materiaal%253Astof+met+netweefsel&filter=materiaal%253Asoftex+met+netweefsel&sort=SalesRanking%3Aasc&query=%2A` resulted in a `400 Bad Request` response: {"error":"Bad Request","errorDescription":"The filter parameter must contain a : to split key and value"}