I am trying to remove the grid lines on the Radar chart on chart.js v2 for react.

Desired Result but keeping the outermost line while removing the inner lines and numbers

I have attempted to use the following code but it only returns a runtime error saying "category" is not a registered scale.

const options = {
  scales: {
    x: {
      grid: {
        display: false
      }
    },
    y: {
      grid: {
        display: false
      }
    }
  }
}