Update backend/main.py

backend/main.py

@@ -39,7 +39,7 @@ def get_model():
                 "Place your Keras model at /app/model.keras or set MODEL_PATH."
             )
         # compile=False is safer for inference-only deployments
-        _model = tf.keras.models.load_model(MODEL_PATH, compile=False)
+        _model = tf.keras.models.load_model("/app/model.keras", compile=False)
     return _model