### async_in_sync ``` Encountered asynchronous work while rendering synchronously. ``` You (or the framework you're using) used `render` with an async component. Either use `renderAsync` or wrap the async component in a `svelte:boundary` with a `pending` snippet. ### lifecycle_function_unavailable ``` `%name%(...)` is not available on the server ``` Certain methods such as `mount` cannot be invoked while running in a server context. Avoid calling them eagerly, i.e. not during render. ### missing_experimental_flag ``` Attempted to use `renderAsync` without `experimental.async` enabled ``` Set `experimental.async: true` in your compiler options to use async server rendering.