deal with triger when removing the input image

app.py

@@ -60,6 +60,12 @@ with gr.Blocks(css="style.css") as demo:
     @spaces.GPU
     def set_pipe(image_editor, input_image, description_prompt, edit_guidance_scale, num_inference_steps=4,
                  num_inversion_steps=4, inversion_max_step=0.6, rnri_iterations=2, rnri_alpha=0.1, rnri_lr=0.2):
+        if input_image is None or not description_prompt:
+            return None, "Please set all inputs."
+
+        print('### description_prompt ', description_prompt)
+        print('### input_image.size ', input_image.size)
+        
         if image_editor is not None:
             image_editor = image_editor.to('cpu')