In my flow, I am receiving this error on my 'Get user profile (V2) action:
WorkflowOperationParametersRuntimeMissingValue. The 'inputs.parameters' of workflow operation 'Get_user_profile_(V2)' of type 'OpenApiConnection' is not valid. Error details: The resolved string values for the following parameters are invalid, they may not be null or empty: 'id'
I have tried the inputs for this as 'Reviewed by DisplayName' and 'Reviewed by Email Address' but it fails on both!
There could be a few things causing it to not find the user. That action does require either the ID or UPN so the email address should work (although UPN and email aren't always the same). My other question is are there any items in your list where 'Reviewed by' is blank or is it a required field?
As an alternative you could use the Search for users (V2) action. This will return an array even if only one result is found so you'll need to get the first one's name/email/etc. with an expression or something. You can use display name or email address with this, but I'd recommend email address since display names can be the same for multiple users.