with this line of error: Workflow error - The service Postmark - Post email just returned an error (HTTP 422). Please consult their documentation to ensure your call is setup properly. Raw error: {"ErrorCode":402,"Message":"Received invalid JSON input."}
Does anyone have a clue or any kind of a solution?
Unfortunatelly, I still get the same workflow error:
Workflow error - The service Postmark - Post email just returned an error (HTTP 422). Please consult their documentation to ensure your call is setup properly. Raw error: {"ErrorCode":402,"Message":"Received invalid JSON input."}