Unable to correct error to load <lang="scss"> in vue style - vue.js

Question

i am developing an application with webpackconfig , i have installed "sass-loader" and "node-sass" and tried all the different configurations i have found both in the official webpack documentation and in other web references to load scss and i can't solve the following error
ERROR in ./node_modules/css-loader?sourceMap!./node_modules/vue-loader/lib/style-compiler?{"vue":true,"id":"data-v-311067c8","scoped":false,"hasInlineConfig":false}!./node_modules/sass-loader/dist/cjs.js!./node_modules/vue-loader/lib/selector.js?type=styles&index=0!./src/components/devis/animal.vue
ERROR in ./src/main.js
Module not found: Error: Can't resolve 'style-loader, css-loader, sass-loader' in 'C:\Users\juan.urra\Desktop\pricing_3108'
# ./src/main.js 9:0-46
# multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src/main.js
this is my package.json
{
"name": "vue-cli",
"description": "A Vue.js project",
"version": "1.0.0",
"author": "",
"license": "MIT",
"private": true,
"scripts": {
"dev": "cross-env NODE_ENV=development webpack-dev-server --open --hot",
"build": "cross-env NODE_ENV=production webpack --progress --hide-modules",
"serve": "vue-cli-service serve"
},
"dependencies": {
"axios": "^0.19.2",
"bootstrap": "^4.5.2",
"bootstrap-vue": "^2.16.0",
"vue": "^2.5.11",
"vue-mq": "^1.0.1",
"vue-router": "^3.3.4",
"vue-style-loader": "^4.1.2",
"vuelidate": "^0.7.5",
"vuex": "^3.5.1"
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
],
"devDependencies": {
"babel-core": "^6.26.0",
"babel-loader": "^7.1.2",
"babel-preset-env": "^1.6.0",
"babel-preset-stage-3": "^6.24.1",
"cross-env": "^5.0.5",
"css-loader": "^0.28.7",
"file-loader": "^1.1.11",
"less": "^3.12.2",
"less-loader": "^7.0.0",
"node-sass": "^4.14.1",
"sass": "^1.26.10",
"sass-loader": "^9.0.3",
"style-loader": "^1.2.1",
"stylus": "^0.54.8",
"stylus-loader": "^3.0.2",
"vue-loader": "^13.0.5",
"vue-template-compiler": "^2.4.4",
"webpack": "^3.12.0",
"webpack-dev-server": "^2.9.1"
}
}
this is my webpack.config
var path = require('path')
var webpack = require('webpack')
module.exports = {
entry: './src/main.js',
output: {
path: path.resolve(__dirname, './dist'),
publicPath: '/dist/',
filename: 'build.js'
},
module: {
rules: [
{
test: /\.css$/,
use: [
'vue-style-loader',
'css-loader'
],
},
{
test: /\.scss$/,
use: [
'vue-style-loader',
'css-loader',
'sass-loader'
],
},
{
test: /\.sass$/,
use: [
'vue-style-loader',
'css-loader',
'sass-loader?indentedSyntax'
],
},
{
test: /\.vue$/,
loader: 'vue-loader',
options: {
loaders: {
'scss': [
'vue-style-loader',
'css-loader',
'sass-loader'
],
'sass': [
'vue-style-loader',
'css-loader',
'sass-loader?indentedSyntax'
]
}
// other vue-loader options go here
}
},
{
test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
use: [
{
loader: 'file-loader',
options: {
name: '[name].[ext]',
outputPath: 'fonts/'
}
}
]
},
{
test: /\.js$/,
loader: 'babel-loader',
exclude: /node_modules/
},
{
test: /\.(png|jpg|gif|svg)$/,
loader: 'file-loader',
options: {
name: '[name].[ext]?[hash]'
}
}
]
},
watch: true,
resolve: {
alias: {
'vue$': 'vue/dist/vue.esm.js'
},
extensions: ['*', '.js', '.vue', '.json']
},
devServer: {
historyApiFallback: true,
noInfo: true,
overlay: true
},
performance: {
hints: false
},
devtool: '#eval-source-map'
}
if (process.env.NODE_ENV === 'production') {
module.exports.devtool = '#source-map'
// http://vue-loader.vuejs.org/en/workflow/production.html
module.exports.plugins = (module.exports.plugins || []).concat([
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: '"production"',
BASE_URL_API: '"https:///"',
USER: '"j.doe1"',
PASSWORD: '"password"',
PAYMENT_URL: '"https:///"'
}
}),
new webpack.optimize.UglifyJsPlugin({
sourceMap: true,
compress: {
warnings: false
}
}),
new webpack.LoaderOptionsPlugin({
minimize: true
})
])
} else {
module.exports.plugins = (module.exports.plugins || []).concat([
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: '"development"',
BASE_URL_API: '"https:///"',
USER: '"j.doe1"',
PASSWORD: '"password"',
PAYMENT_URL: '"https:///"'
}
})
])
}
and the error jumps when I refer to the lang "scss" in the style tag
Should I make any reference in my main.js? I haven't seen anything about it in any reference
I'm stuck in this error and I can't fix it in any way! Someone who can make me see the error!
Greetings and thanks in advance for your time and help

Answer 1

after trying all the solutions I found on the web and not seeing the error I found a github repository with a similar project in structure to mine and reviewing the package.json I saw that the only difference was the version of 'sass-loader'. Mine was by default the last version and yours was an older one, so I downloaded the version to yours and the problem was solved. I understand that there is some kind of incompatibility between webpack and sass loader versions, although I have not found any reference to the issue. I hope to help.