Hello Experts,
I'm setting up Freetext invoice approval via BE following this tutorial:
https://www.youtube.com/watch?v=yGEObxOAsk4
I'm currently facing 2 issue in the "condition" action.
1st :
if the "Assigned to" parameter is set to WorkflowUserEmail. When the flow is triggered, i got an error like below even the approve user is available in D365 and same tenant with submitter.
Setting:

Error:

2nd:
if i change "Assigned to" to Approver's email then i passed the error and can see the approval item in Action items.
After hit approve, the second error comes out:
Setting:


Error:


{
"status": 400,
"message": "An error has occurred. InvokeAction - Model state is invalid. parameters: Cannot convert the literal '' to the expected type 'Edm.Guid'.\r\nclientRequestId: 46af1226-f002-4d70-bcc8-a1a37e57da88",
"error": {
"message": "An error has occurred. InvokeAction - Model state is invalid. parameters: Cannot convert the literal '' to the expected type 'Edm.Guid'."
Can you please let me know if anything is missing?