[JavaScript] webpack-dev-server can not GET 오류 해결

webpack-dev-server 서버를 사용하다 오류가 발생했습니다. package.json { "name": "eslint_webpack_study", "version": "1.0.0", "description": " ", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1", "build": "webpack", "build:dev": "webpack-dev-server" }, "author": "", "license": "ISC", "devDependencies": { "eslint": "^8.38.0", "eslint-config-google": "^0.14.0", "webpack": "^5.78.....