Authorization issue by working on btp tutorial

Hi gurus,

I am facing with error while I am working on a SAP BTP Cds view tutorial.

https://developers.sap.com/tutorials/abap-environment-create-cds-mde.html

I am at step 7 and get a error in ADT. The service binding in browser shows a error too.

Wha should I do?

And in ADT the following errors:

Backend Error: No service found for namespace cds_z_expose_travel_r_, name Z_BIND_TRAVEL_R_, version 0001, Service: Z_BIND<br>Frontend Error: Keine Berechtigung für den Zugriff auf Service 'Z_BIND_TRAVEL_R_0001', Service: /SAP/-Z_BIND_TRAVEL_R_