d3__WEBPACK_IMPORTED_MODULE_5__.scaleSequential is not a function

The error message "d3__WEBPACK_IMPORTED_MODULE_5__.scaleSequential is not a function" indicates that the function `scaleSequential` is not available in the d3 library version 5 (or the version you are using).

In d3 version 5, the `scaleSequential` function was replaced by `scaleSequential()` method, which returns a new sequential scale.

Here's an example of how you can use `scaleSequential()` in d3 version 5:

const colorScale = d3.scaleSequential()
  .domain([0, 10])
  .interpolator(d3.interpolateBlues);

console.log(colorScale(5)); // returns a color value based on the input value

Please make sure you are using the correct version of d3 and update your code accordingly.