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

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### await_invalid

```
Encountered asynchronous work while rendering synchronously.
```

You (or the framework you're using) called [`render(...)`](svelte-server#render) with a component containing an `await` expression. Either `await` the result of `render` or wrap the `await` (or the component containing it) in a [`<svelte:boundary>`](svelte-boundary) with a `pending` snippet.

### html_deprecated

```
The `html` property of server render results has been deprecated. Use `body` instead.
```

### hydratable_clobbering

```
Attempted to set `hydratable` with key `%key%` twice with different values.

First instance occurred at:
%stack%

Second instance occurred at:
%stack2%
```

This error occurs when using `hydratable` multiple times with the same key. To avoid this, you can:
- Ensure all invocations with the same key result in the same value
- Update the keys to make both instances unique

```svelte
<script>
  import { hydratable } from 'svelte';
  await Promise.all([
    // which one should "win" and be serialized in the rendered response?
    hydratable('hello', () => 'world'),
    hydratable('hello', () => 'dad')
  ])
</script>
```

### hydratable_serialization_failed

```
Failed to serialize `hydratable` data for key `%key%`.

`hydratable` can serialize anything [`uneval` from `devalue`](https://npmjs.com/package/uneval) can, plus Promises. 

Stack:
%stack%
```

### 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.

### render_context_unavailable

```
Failed to retrieve `render` context. %addendum%
If `AsyncLocalStorage` is available, you're likely calling a function that needs access to the `render` context (`hydratable`, `cache`, or something that depends on these) from outside of `render`. If `AsyncLocalStorage` is not available, these functions must also be called synchronously from within `render` -- i.e. not after any `await`s.
```