In my collection I have a POST request which sends a multipart/form-data. Request includes JSON and file. When I send request using Postman Desktop on Windows 10 everything works fine, but when I send the exact same request using Postman Web I get response 415 Unsupported Media Type. To me it looks like Postman Web doesn’t apply Content-type application/json for the JSON.
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Do you know which Postman Agent that you were using the send this request on the web platform?