Error Code:

Error Code	500011
Message	The resource principal named {name} was not found in the tenant named {tenant}. This can happen if the application has not been installed by the administrator of the tenant or consented to by any user in the tenant. You might have sent your authentication request to the wrong tenant.
Remediation	Developer error - the app requested access to a resource (application) that isn't installed in your tenant. If you expect the app to be installed, you may need to provide administrator permissions to add it. Check with the developers of the resource and application to understand what the right setup for your tenant is.