Client error: `GET https://delta-v-ng.fact-finder.de/fact-finder/rest/v4/navigation/deltav_ch?channel=deltav_ch&event=navigation&sid=fa8aj9k7f2j87adteigm5v67cv&format=json&query=&filter=CategoryPath%3ASozialraum-Einrichtung&filter=Unterbau%253Amit+F%25EF%25BF%25BD%25EF%25BF%25BD%25EF%25BF%25BD%25EF%25BF%25BDen&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"}