The argument type String? can't be assigned to the parameter type String

The argument type ‘String?’ can’t be assigned to the parameter type ‘String

code is here.kindly please solve my problem sir

 class IconContent extends StatelessWidget {
      IconContent({this.icon,this.label});
      final IconData? icon;
       final String? label;
      @override
      Widget build(BuildContext context) {
        return Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Icon(
              icon,
              size: 80.0,
            ),
            SizedBox(
             height: 15.0,
            ),
            Text(
              label,
              style: TextStyle(
                fontSize: 18.0,
                color: Color(0xFFB2B58E),
              ),
            )
          ],
        );
      }
    }

>Solution :

String? is a nullable String which is not equal to String

More about null-safety: https://dart.dev/null-safety

Change,

IconContent({this.icon,this.label});
      final IconData? icon;
       final String? label;

To,

IconContent({this.icon, required this.label});
      final IconData? icon;
       final String label;

Or,

Change,

Text(
              label,
              style: TextStyle(
                fontSize: 18.0,
                color: Color(0xFFB2B58E),
              ),
            )

To,

if(label != null)
    Text(
        label!,
        style: TextStyle(
            fontSize: 18.0,
            color: Color(0xFFB2B58E),
        ),
    )

! indicates the label is not null. Make sure the label is never null if you use !

Or,

Text(
              label ?? 'default label incase label is null',
              style: TextStyle(
                fontSize: 18.0,
                color: Color(0xFFB2B58E),
              ),
            )