Issue with Google Vertex AI: Error 403 “Request had insufficient authentication scopes

:bullseye: What is your goal?

Connect the Google Vertex AI module in Make.com to my Google Cloud Platform (GCP) project to run my AI workflows successfully.

:thinking: What is the problem & what have you tried?

Hi,
Initially, I successfully set up the connection between Make and my Google Cloud Console, and the scenario ran perfectly. However, a few days later, the workflow stopped at the Google Vertex AI module.

Now, whenever I attempt to re-add the connection or select the GCP Project, the module fails with the following errors:

[403] Request had insufficient authentication scopes

Failed to load Data

What I have tried:

I created a completely new project on my Google Cloud Console and tried connecting to it, but the exact same error persists.

I verified that the Vertex AI API is still enabled on my GCP project.

I am stuck and cannot find the root cause. Could anyone please guide me on how to fix this issue or check if something recently changed with the required OAuth scopes?
Thank you in advance for your assistance

:clipboard: Error messages or input/output bundles

[403] Request had insufficient authentication scopes.
Failed to load data!

:camera_with_flash: Screenshots (scenario flow, module settings, errors)