svelte/documentation/docs/98-reference/.generated/server-errors.md

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.