fix encode error

app_ddim.py

@@ -51,7 +51,9 @@ def image_to_image(
     run_task_time, time_cost_str = get_time_cost(run_task_time, time_cost_str)
 
     with torch.no_grad():
-        latent = basepipeline.vae.encode(tfms.functional.to_tensor(input_image).unsqueeze(0).to(DEVICE) * 2 - 1)
+        input_image_tensor = tfms.functional.to_tensor(input_image).unsqueeze(0).to(DEVICE)
+        input_image_tensor = input_image_tensor.to(dtype=torch.float16)
+        latent = basepipeline.vae.encode(input_image_tensor * 2 - 1)
     l = 0.18215 * latent.latent_dist.sample()
     inverted_latents = invert(l, input_image_prompt, num_inference_steps=num_steps)
     generated_image = sample(