Update app.py

app.py

@@ -503,10 +503,23 @@ def generate(prompt, vp_pos, vp_neg, slider, example_prompt, gallery, num_infere
         if re.search(rf"\b{filter}\b", vp_pos) or re.search(rf"\b{filter}\b", vp_neg):
             raise gr.Error("Please try again with a different visual preference")
 
+    if vp_pos != "":
+        vp_pos = vp_pos.split(", ")
+        random.shuffle(vp_pos)
+        vp_pos = ", ".join(vp_pos)
+
+    if vp_neg != "":
+        vp_neg = vp_neg.split(", ")
+        random.shuffle(vp_neg)
+        vp_neg = ", ".join(vp_neg)
+
     if randomize_seed:
         seed = random.randint(0, MAX_SEED)
         
     generator = torch.Generator().manual_seed(seed)
+
+    if prompt is None:
+        promtpt = ""
     
     image = pipe(prompt=prompt, 
                 num_inference_steps=num_inference_steps,