Update app.py

app.py

@@ -34,8 +34,8 @@ sandbox = gr.Interface.load(
     fn= selectModel,
     name= custom_model, 
     title="""AlStable sandbox""",
-    inputs = gr.Textbox(label="Prompt", show_label=False, max_lines=2, placeholder="Enter your prompt", elem_id="input-prompt1", 
-              gr.Textbox(label="Model", show_label=False, max_lines=2, placeholder="Enter your style", elem_id="input-prompt2"),
+    inputs = [gr.Textbox(label="Prompt", show_label=False, max_lines=2, placeholder="Enter your prompt", elem_id="input-prompt1", 
+              gr.Textbox(label="Model", show_label=False, max_lines=2, placeholder="Enter your style", elem_id="input-prompt2")],
     description="""Demo for <a href="https://huggingface.co/stabilityai/stable-diffusion-2-1">AlStable</a> Stable Diffusion model.""",
     article=article,
     api_key=API_KEY