[Bug] Can't found "/modeling-service/v1/schemas/*" request in backend

[lpx84]

I download it and config the backend host, finally i run npm start as readme said, when I visit the http://localhost:4201, there are some requests like /modeling-service/v1/schemas/** have been sent to backend(the project: https://github.com/Activiti/activiti-cloud-application/tree/develop/activiti-cloud-modeling), but the backend return 404.