Update app.py

app.py

@@ -63,11 +63,11 @@ def infer(
     negative_prompt, 
     width=512, 
     height=512, 
-    num_inference_steps, 
-    model, 
-    seed, 
-    guidance_scale, 
-    lora_scale,
+    num_inference_steps=20, 
+    model_id='stable-diffusion-v1-5/stable-diffusion-v1-5', 
+    seed=4, 
+    guidance_scale=7.5, 
+    lora_scale=0.5,
     progress=gr.Progress(track_tqdm=True)
     ):