I try to get a very simple flow to work.
The flow have trigger, a SharePoint Create File and a OneDrive Convert file (for Business)

The step OneDrive Convert file (for Business) fails with:
"status": 400,
"message": "The file id '%252fRechnungsablage%252ftemporary%252ftest.txt' is not valid.",
"source": "api.connectorp.svc.ms"
The input of the step is the body/Id from the SharePoint Create File step.

I also try the Adobe PDF Connector to convert files to PDF with out success.
Is there a working example how to convert a SharePoint TXT File in to PDF File?
(and for the step after: merge the created PDF File with an existing PDF File)