Update app.py

app.py

@@ -126,7 +126,7 @@ css = """
 """
 with gr.Blocks(css = css, static_dir="data") as app:
     with gr.Row(elem_id="container"):
-        gr.Markdown("""<div style='text-align: center;'><img src="data/header.png" width="1000" height="500" /></div>""")
+        gr.Markdown("""<div style='text-align: center;'><img src="/data/header.png" width="1000" height="500" /></div>""")
 
     gr.Markdown("""  
     ## This Gradio app serves as four folds: