Client error: `GET https://delta-v-ng.fact-finder.de/fact-finder/rest/v4/navigation/deltav_be?channel=deltav_be&event=navigation&sid=j1e4g7v8phfeg160p42k5ljpet&format=json&query=&filter=CategoryPath%3AStoelen+%252B+Zitmeubilair%2FVergaderstoelen%2FBezoekersstoelen+Serie+ISO&filter=materiaal%253Astof+DELTA1&filter=materiaal%253Astof&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"}