Fix the wrong sandbox request base uri path

This is a serious mistake blocking all the normal requests to the right end.

I strongly believe that the default `httpsSandPath` should also be `/router/rest`, 
and it's finally verified by testing requests.

這是一個致命性的錯誤，致使所有正常的請求無法成功進行

我堅信默認的`httpsSandPath`應該設為`/router/rest`，並且最終通過測試確認此觀點。