Update the UI and main

static/scripts/data-visualisation.js

@@ -38,7 +38,7 @@ document.addEventListener("DOMContentLoaded", function () {
 			formdata.append("user_need", prompt);
 			const response = await fetch("/plot", {
 				method: "POST",
-				body: formData,
+				body: formdata,
 			});
 			const result = await response.json();