Flutter: Conditional statement for my IconButton is not working

I only want my iconButton to show if there is more info on my row. What is the correct way to code this? My if has red error mark on it.

                  if(item.info != ""){
                          child: IconButton(
                          icon:
                          const Icon(Icons.info_outline_rounded),
                               onPressed: () {
                      
                                 Navigator.push(
                                   context,
                                   MaterialPageRoute(
                                   builder: (context) => const Page2()));
                               }, //onPressed
                          ), //IconButton
                 }, //end if statement
     ), //Center

Center(
  child: item.info != ""
      ? IconButton(
          icon: const Icon(Icons.info_outline_rounded),
          onPressed: () {
            Navigator.push(context,
                MaterialPageRoute(builder: (context) => const Page2()));
          }, //onPressed
        )
      : Container(),
)

or with Visibility widget

Visibility(
    visible: item.info != "",
    child: IconButton(
      icon: const Icon(Icons.info_outline_rounded),
      onPressed: () {
        Navigator.push(context,
            MaterialPageRoute(builder: (context) => const Page2()));
      }, //onPressed
    ))