Fixing Webpack's Watch Option - node.js

Question

I had code that worked just fine, but now I've updated some packages, especially webpack, and I'm getting some warnings that I'd like to remove.
When I run the command npm run watch, I get the following error:
[DEP_WEBPACK_WATCH_WITHOUT_CALLBACK] DeprecationWarning: A 'callback' argument need to be provided to the 'webpack(options, callback)' function when the 'watch' option is set. There is no way to handle the 'watch' option without a callback.
My package.json is as follows:
{
"name": "simple-flask-react-template",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"build": "webpack -p --progress --config webpack.config.js",
"dev-build": "webpack --progress -d --config webpack.config.js",
"test": "echo \"Error: no test specified\" && exit 1",
"watch": "webpack --progress -d --config webpack.config.js --watch"
},
"author": "jadiker",
"license": "None",
"homepage": "https://github.com/rbarbaresco/simple-flask-react-template#readme",
"devDependencies": {
"babel-core": "^6.26.3",
"babel-loader": "^7.1.5",
"babel-preset-env": "^1.7.0",
"babel-preset-react": "^6.24.1",
"bootstrap": "^4.2.1",
"css-loader": "^2.1.0",
"file-loader": "^3.0.1",
"jquery": "^3.5.1",
"popper.js": "^1.14.7",
"react": "^16.7.0",
"react-dom": "^16.7.0",
"webpack": "^5.11.1",
"webpack-cli": "^3.3.10"
},
"babel": {
"presets": [
"env",
"react"
]
},
"dependencies": {
"#fortawesome/fontawesome-svg-core": "^1.2.28",
"#fortawesome/free-solid-svg-icons": "^5.13.0",
"#fortawesome/react-fontawesome": "^0.1.9",
"query-string": "^6.11.1",
"react-router-dom": "^5.1.2"
}
}
My webpack.config.js is as follows:
const webpack = require('webpack');
const config ={
mode: 'development',
entry: {
login: './js/login.jsx',
signup: './js/signup.jsx',
index: './js/index.jsx',
search: './js/search.jsx',
ask: './js/ask.jsx',
question: './js/question.jsx',
help: './js/help.jsx',
test: './js/test.jsx',
},
devtool: 'inline-source-map',
output: {
path: __dirname + '/dist/bundle',
filename: '[name].bundle.js',
},
resolve:{
extensions:[
'.js',
'.jsx',
'.css'
]
},
module:{
rules:[
{
test:/\.jsx?/,
exclude:/node_modules/,
use:'babel-loader'
},
{
test:/\.(jpe?g|png|gif|svg)$/i,
loader:"file-loader",
},
{
test:/\.css$/,
use:[
'css-loader'
],
},
]
}
};
module.exports = config;
What can I change in the code in order to get that warning to go away?