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How to Fix Failed to Fetch Dynamically Imported Module Error in React with Vite

The 'Failed to Fetch Dynamically Imported Module' error in React with Vite usually indicates the browser cannot locate JavaScript chunk files after deployment. The primary fix is correctly configuring the `base` option in `vite.config.js`. If your app is deployed to a sub-path (e.g., `https://example.com/my-app/`), set `base: '/my-app/'`. For root domain deployments, `base: '/'` is typically correct. When using a CDN or different origin, specify the full public URL, like `base: 'https://cdn.example.com/assets/'`. Beyond `base`, ensure all generated JavaScript chunk files (`dist/assets/.js`) are correctly uploaded and accessible on your server. For SPAs, your server configuration must include a fallback rule to serve `index.html` for all unknown paths, preventing 404s for dynamic imports. Also, verify your server provides JavaScript files with `Content-Type: application/javascript` and that no strict Content Security Policies (CSPs) block script fetching. Clearing browser and CDN caches can resolve stale references.

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