You are using a legacy browser but only the modern bundle has been built()

in fusion-cli/plugins/ssr-plugin.js [107:123]

• 15 lines of code
• 6 McCabe index (conditional complexity)

<p>You are using a legacy browser but only the modern bundle has been built (legacy bundles are skipped by default when using <code style="display:inline">fusion dev</code>)
 or when using using <code style="display:inline">fusion build</code> with the --modernBuildOnly flag.</p>
<p>Please use a modern browser, <pre><code style="display:inline">fusion dev --forceLegacyBuild</code></pre> or
<pre><code style="display:inline">fusion build</code></pre> with no --modernBuildOnly flag to build the legacy bundle.</p>
<p>For more information, see the docs on <a href="https://github.com/fusionjs/fusion-cli/blob/master/docs/progressively-enhanced-bundles.md">progressively enhanced bundles</a>.</p>
</body>
</html>`;
          }
        }

        const criticalChunkUrls =
          isModernBrowser || legacyUrls.length === 0 ? modernUrls : legacyUrls;
        let criticalChunkScripts = [];
        let preloadHints = [];

        for (let url of criticalChunkUrls) {
          if (!__DEV__ && dangerouslyExposeSourceMaps) {