'Error: "category" is not a registered scale

I'm trying to migrate Chart.js from 2.9.3 to 3.3.0 and even after applying the the changes (https://www.chartjs.org/docs/latest/getting-started/v3-migration.html) I'm still getting the error:

Error: "category" is not a registered scale.

This is what I have

Chart.register(BarController, DoughnutController, LineController, PieController);

new Chart(this.id, {
    type: 'bar',
    data,
    options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: {
        title: {
            display: options.plugins.title ? true : false,
        },        
        tooltip: {
            mode: 'index',
            intersect: false
        },        
        scales: {
        x: {
            stacked: true,
            gridLines: {
            drawBorder: false,
            display: false,
            },
            ticks: {
            autoSkip: true,
            maxTicksLimit: 13,
            },
        },
        y: {
            stacked: true,
            gridLines: {
            color: '#e6e6e6',
            drawBorder: false,
            },
        }
    }
});

What could I be missing here?

chart.js


Solution 1:[1]

Like the error says you are using the category scale so you will need to import and register it like so:

import {CategoryScale} from 'chart.js'; 
Chart.register(CategoryScale);

Or you can choose to not use treeshaking and import everything like so:

import Chart from 'chart.js/auto';

For all available things you might need to import and register please take a look here: https://www.chartjs.org/docs/3.3.0/getting-started/integration.html#bundlers-webpack-rollup-etc

Solution 2:[2]

If you are using react-chartjs-2.

Without tree shaking:

import { Chart as ChartJS } from 'chart.js/auto'
import { Chart }            from 'react-chartjs-2'

With tree shaking:

import {
  Chart as ChartJS,
  CategoryScale,
  LinearScale,
  PointElement,
  LineElement,
  Title,
  Tooltip,
  Legend,
} from 'chart.js'
import { Chart } from 'react-chartjs-2'

ChartJS.register(
  CategoryScale,
  LinearScale,
  PointElement,
  LineElement,
  Title,
  Tooltip,
  Legend
)

Solution 3:[3]

To use with react-chartjs-2 and import everything; changing chart as chartjs so that it does not show error for importing chart from react chart

import { Chart as ChartJS, registerables } from 'chart.js';
import { Chart } from 'react-chartjs-2'
ChartJS.register(...registerables);

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Erik Martín Jordán
Solution 3 Prateek

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