Hi @Anonymous,
Could you please share a screenshot of your flow's configuration?
Further, do you want to send an email to the user who start the flow after the approval action?
I have made a test on my side, please take a try with the following workaround:
Within the "Send an email" aciton, set the To field to the User email dynamic content of the trigger.
Note: The User email dynamic content would be shown up when you click the "See more" button of "For a selected item" part within the right Dynamic content panel
The flow works successfully as below:
Best regards,
Kris