Error in user YAML: (<unknown>): could not find expected ':' while scanning a simple key at line 3 column 1
---
title: ${title}
image: ${image}
${bookYaml}
${bookmarkYaml}
${playlistYaml}
---
The books I read, playlist I made, and bookmarks I saved during ${title}.
${bookMarkdown}
${playlistMarkdown}
${bookmarkMarkdown}