title: Issue with Agora restful API
body: <p>I'm using Xamarin.Agora.Full.Android (3.5.0.3) for live streaming. everything works fine but when I ends live streaming and send request to Agora Rest API at (<strong>&quot;https://api.agora.io/v1/apps/&quot; + appid + &quot;/cloud_recording/resourceid/&quot; + resourceId + &quot;/sid/&quot;+ sid + &quot;/mode/mix/stop&quot;;</strong>),  but the response coming from this API is not consistent, sometimes it returns status code 200 and sometime status code 400, when status code is 200 I can get the video URL, but when status code is 400, instead of video URL, I got null value.
  My http request is the same but I receive two different responses. I have read Agora restful API docs, but I didn't find my solution.
  Is there any solution regarding my problem?</p>
  <p>Best Regards:</p>