update 3

app.py

@@ -1,6 +1,6 @@
 import gradio as gr
 
-with gr.Blocks("Image", "Text", "Text"):
+with gr.Blocks() as block:
     textbox = gr.Textbox(label="Enter your text here")
     bttn = gr.Button()
     output = gr.Textbox(label="Output")
@@ -9,3 +9,5 @@ with gr.Blocks("Image", "Text", "Text"):
         return input_data + "Submitted"
     
     bttn.click(submit, inputs=[textbox], outputs=[output])
+
+block.launch()