type error

app_v3.py

@@ -77,8 +77,8 @@ def combine_caption_focus(caption, focus):
     if caption is None:
         caption = ""
     if focus is None:
-        focus = ""
-    return (caption + "\n\n" + focus).strip()
+        focus = "highly detailed photo, raw photography."
+    return (str(caption) + "\n\n" + str(focus)).strip()
 
 def generate_caption(control_image):
     if control_image is None:
@@ -154,7 +154,7 @@ with gr.Blocks(title="FLUX Turbo Upscaler", fill_height=True) as demo:
     with gr.Row():
         with gr.Column(scale=1):
             prompt = gr.Textbox(lines=4, info="Enter your prompt here or wait for auto-generation...", label="Image Description")
-            focus = gr.Textbox(label="Areas of Focus", info="e.g. 'face', 'eyes', 'hair', 'clothes', 'background', etc.")
+            focus = gr.Textbox(label="Area(s) of Focus", info="e.g. 'face', 'eyes', 'hair', 'clothes', 'background', etc.", value="clothing material, textures, ethnicity")
             scale = gr.Slider(1, 3, value=1, label="Scale (Upscale Factor)", step=0.25)
             with gr.Row():
                 generate_button = gr.Button("Generate Image", variant="primary")