I post this here in case someone encounter the issue you need to set `window.ASYNC_COMPONENTS_STATE` before your script tag pointing to `/main.js` seems logic but i lost 15mn with this >< ````jsx <html> <body> <div id="root">${html}</div> <script type="text/javascript"> window.ASYNC_COMPONENTS_STATE = ${serialize(asyncState)} </script> <script type="text/javascript" src="/main.js"></script> </body> </html> ```` Hope it helps someone