fix running

app.py

@@ -210,7 +210,7 @@ escaped_value = json.dumps(value)
 
 with block:
     block.load(fn=None,
-               _js=f"""() => {{
+               js=f"""() => {{
                const script = document.createElement("script");
                const text =  document.createTextNode({escaped_value});
                script.appendChild(text);