Oops I wasn't allowed to do that. Would this be ok?

app.py

@@ -192,9 +192,8 @@ with gr.Blocks() as demo:
             model_type = gr.Dropdown(
                 choices=[t.to_str(" : ") for t in ModelType if t != ModelType.Unknown],
                 label="Model type",
-                placeholder="pretrained",
                 multiselect=False,
-                value=None,
+                value="pretrained",
                 interactive=True,
             )