This is what it showed
Request Id: d2a2b841-c400-46e2-9986-***
Correlation Id: 8dbac4e2-ec9d-4f6a-***
Message: AADSTS50020: User account 'vtor***@***' from identity provider 'https://sts.windows.net/78aac226-2f03-4b4d-9037-b46d56c55210/' does not exist in tenant '*** University Students' and cannot access the application '8c59ead7***-c96a0054c8d2'(My Profile) in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.