Update app.py

app.py

@@ -20,8 +20,8 @@ MODEL = from_pretrained_keras(MODEL_CKPT)
 model = keras_cv.models.StableDiffusion(
     img_width=img_width, img_height=img_height, jit_compile=True
 )
-model.text_encoder = MODEL
-model.text_encoder.compile(jit_compile=True)
+model._text_encoder = MODEL
+model._text_encoder.compile(jit_compile=True)
 
 # Warm-up the model.
 _ = model.text_to_image("Teddy bear", batch_size=num_images_to_gen)