Render部署npm run build报错，本地构建正常无异常

本地执行npm run build无错误，frontend目录可正常生成dist文件夹，但在Render平台部署时执行该命令却报错。已确认路由、文件名及导入导出配置均正确，仍无法解决。

平台配置详情：

• Build Command：npm run build
• Start Command：npm run start

尝试过的解决操作：

• 移除NODE_ENV=production环境变量：因Vite属于devDependency未被下载，构建依旧失败
• 将NODE_ENV设为development：仍出现相同构建错误

报错信息 #

img/bg3.jpg referenced in /opt/render/project/src/frontend/src/index.css didn't resolve at build time, it will remain unchanged to be resolved at runtime

Jul 9 07:23:22 PM✓ 41 modules transformed.

Jul 9 07:23:22 PMx Build failed in 1.05s

Jul 9 07:23:22 PMerror during build:

Jul 9 07:23:22 PMCould not resolve "../../components/sidebar/Sidebar" from "src/pages/home/Home.jsx"

Jul 9 07:23:22 PMfile: /opt/render/project/src/frontend/src/pages/home/Home.jsx

Jul 9 07:23:22 PM at getRollupError (file:///opt/render/project/src/frontend/node_modules/rollup/dist/es/shared/parseAst.js:396:41)

Jul 9 07:23:22 PM at error (file:///opt/render/project/src/frontend/node_modules/rollup/dist/es/shared/parseAst.js:392:42)

Jul 9 07:23:22 PM at ModuleLoader.handleInvalidResolvedId (file:///opt/render/project/src/frontend/node_modules/rollup/dist/es/shared/node-entry.js:19102:24)

Jul 9 07:23:22 PM at file:///opt/render/project/src/frontend/node_modules/rollup/dist/es/shared/node-entry.js:19062:26

Jul 9 07:23:22 PM==> Build failed 😞

Jul 9 07:23:22 PM==> Common ways to troubleshoot your deploy: https://docs.render.com/troubleshooting-deploys

package.json中的scripts配置 #

"scripts": {
    "start": "node backend/server.js",
    "start:dev": "cross-env DEBUG=socket.io:server NODE_ENV=development nodemon backend/server.js",
    "start:prod": "cross-env NODE_ENV=production nodemon backend/server.js",
    "build": "npm install && npm install --prefix frontend && npm run build --prefix frontend"
}

内容的提问来源于stack exchange，提问作者user19238024