Hi,
That’s because a File property in Notion expects an array with name and url - see Page properties
So, if you want to map multiple files, you need to setup the correct array before mapping it like you show in the screenshot.
If you are sure you’re always adding only 1 file instead, you can turn off the “Map” toggle in the Make field, and add the name + url directly (mapped from previous modules or manual as needed)
You can create a data structure that matches the second JSON. In the JSON module, create a data structure from JSON, and copy-paste the JSON from the Notion documentation to generate the data structure
That looks like the raw JSON output - I would try using a “Parse JSON” module right after “Create JSON” to clean up the output, and then map the output of Parse JSON into the Notion module