# Failed to parse Markdown frontmatter.

> **Example error messages:**\
> can not read an implicit mapping pair; a colon is missed\
> unexpected end of the stream within a double quoted scalar\
> can not read a block mapping entry; a multiline key may not be an implicit key

## What went wrong?

[Section titled “What went wrong?”](#what-went-wrong)

Astro encountered an error while parsing the frontmatter of your Markdown file. This is often caused by a mistake in the syntax, such as a missing colon or a missing end quote.