> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 0.51.7 **`(fix):`** Added better error messages when markdown files reference non-existent MDX files, showing the relative path to the missing file rather than just indicating an invalid reference. ## 0.51.6 **`(fix):`** Fixed OpenAPI importer to properly handle string enums that are specified as integers by coercing them to strings. ## 0.51.5 **`(fix):`** Added a new rule to validate frontmatter parsing across markdown files, ensuring frontmatter is properly formatted and can be parsed without errors.