debug: test with gr.Interface instead of gr.Blocks

app.py

@@ -3,12 +3,7 @@ import gradio as gr
 def echo(text):
     return f"Echo: {text}"
 
-with gr.Blocks(title="Minimal Test") as demo:
-    gr.Markdown("# Minimal Test")
-    inp = gr.Textbox(label="Input")
-    out = gr.Textbox(label="Output")
-    btn = gr.Button("Submit")
-    btn.click(fn=echo, inputs=inp, outputs=out)
+demo = gr.Interface(fn=echo, inputs="text", outputs="text", title="Interface Test")
 
 if __name__ == "__main__":
     demo.launch()