404 error: /api/mix/v1/order/proportionOrder

[stefan-reich]

I am calling MixOrderService.proportionOrder() in the Java SDK and it tries to load a URL that doesn't exist:

java.lang.RuntimeException:  call /api/mix/v1/order/proportionOrder failed, status : 404, body : {"timestamp":"2022-09-19T18:24:33.674+00:00","status":404,"error":"Not Found","message":"No message available","path":"/api/mix/v1/order/proportionOrder"}
	at com.bitget.openapi.common.client.ApiClient$HttpStatusInterceptor.intercept(ApiClient.java:115)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100)
	at com.bitget.openapi.common.client.ApiClient$SignInterceptor.intercept(ApiClient.java:85)
	... 24 more

What is going on?