Import of simple update failed

Question

I'm testing the Device Update Service. As a first step I try to upload a simple Python file to a device. However, I keep getting the following error message when importing the update into the IoT Hub: Import manifest contains invalid data. (Field 'Files' has invalid data in one of its items.) The relevant location in the maifest file looks like this: "files": [ { "filename": "HelloWorld.py", "sizeInBytes": 24, "hashes": { "sha256": "0777d4c83a32cb91b7b2dcf87a72af4ace65e64525469b70f38854553a65dada" } } The values for the size and Hashvalue should be correct. Any Idea why the update doe not work? ​