update return msg

app.py

@@ -216,10 +216,10 @@ def generate_report():
 
 @app.route("/ms-detection", methods=["POST"])
 def predict():
+    file = request.files["file"]
     if file not in request.files:
         return jsonify({"error": "file not uploaded"}), 400
 
-    file = request.files["file"]
     # Save file temporarily
     temp_path = os.path.join(tempfile.gettempdir(), file.filename)
     file.save(temp_path)