How do I setState of a property to false in React?

Question

I have a React class component that allows some details to be hidden or shown when a button is clicked in the app.

I intialised the state to be as below;

class Admin extends React.Component {
constructor(props){
  super(props)
  this.state = {
    show: false,
  }
}

and then updated the state property like below;

const handleDetails = (props) => {
  this.setState(prevState => ({
    show: !prevState.show}))
}

The project runs, but when the handleDetails function is called, it returns an error of

Cannot read property 'setState' of undefined