CODE EXAMPLE FOR DART

RenderFlex overflowed

Just Wrap your Card, Text widget with Flexible Widget.
And also remember that an `Flexible` widget must be a descendant of a Row, 
Column, or Flex. i.e `Flexible` parent widget should be one of them.

Row(
  children: [
    Flexible(
      child: Text('text'),
    ),
  ],
),