AADSTS65001: The user or administrator has not consented to use the application with ID <app-id>
I'm developing an Angular + Flask application that uses Microsoft's OAuth2 (On-Behalf-Of-User Flow). I'm trying to call an API from the backend, but I get an exception. Here is the configuration in app.module.ts : export function MSALInstanceFactory(): IPublicClientApplication { return new PublicClientApplication({ auth: { clientId: '<application_id_of_sp