the destination not found in approuter application

The picture is configured router, the frontend and backend use the same xsuaa.

But no matter how I change the xs-app.json, the destination is still 404 not found, but actually, the API

https://tioga-design-time-explorer.internal.cfapps.sap.hana.ondemand.com/designtime

works correctly, It can be get, I don't why in my project it can't be find.