Update app.py

app.py

@@ -20,7 +20,7 @@ inputs = [
                             ], type="value", label="Model"), 
     gr.Textbox(lines=1, 
                       label="Prompt Template Prompt", 
-                      default="a photo of a {}"),
+                      value="a photo of a {}"),
 ]
 images="festival.jpg"