receiving HTML as response instead of JSON when sending POST request from lost form

It works well on local host but throws an error of 500 and a HTML response instead of JSON response ext host.
There might be some problem with the "multipart/form-data" content-type which is being send as a POST request.

<img width="339" alt="image" src="https://user-images.githubusercontent.com/97614113/216783060-88bb9594-e0c4-4ddf-a775-4bfcead8d48e.png">
