Hi,
Can you please check if you have permissions assigned to run the Advisor? https://learn.microsoft.com/en-us/azure/advisor/permissions
Can you try Powershell commands to run the advisor and see if that helps? - https://learn.microsoft.com/en-us/powershell/module/az.advisor/?view=azps-9.3.0
Hope this helps.
JS
==
Please Accept the answer if the information helped you. This will help us and others in the community as well.