---
title: MARKLESS_ARTIFACT_CHILD_RENDER_INVALID
description: "Delegate child renderSsr returned no static HTML: a Markless compiler error."
sidebar: { hidden: true }
search: { keywords: ["ARTIFACT_CHILD_RENDER_INVALID","artifact child render invalid","markless error"] }
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---

**Error** from the compiler, while it builds your `.tsrx` files.

## What happened

Markless prints the message, the reason, and a suggestion:

```text
MARKLESS_ARTIFACT_CHILD_RENDER_INVALID: MARKLESS_ARTIFACT_CHILD_RENDER_INVALID: <<componentName>> renderSsr must return static HTML.
The materialized edge is the delegate rendered output, so an output without HTML leaves nothing to inline.
Return an object with a string `html` field from renderSsr.
https://markless.dev/errors/MARKLESS_ARTIFACT_CHILD_RENDER_INVALID
```

Words in angle brackets change from case to case.

## How to fix it

Start with the suggestion in the message above.

This page has no guide yet. [Help write it](/contributing/improve-these-docs).

## Where it comes from

`@markless/compiler` raises this code. Source:

- [packages/compiler/src/passes/link/delegate-children.ts](https://github.com/compiled-run/markless/blob/main/packages/compiler/src/passes/link/delegate-children.ts)

Read [how to read a Markless error](/tooling/diagnostics), or go back to [all error codes](/errors).