solve a bug in a swift code

I am looking for a skilled Swift developer to help me solve a bug in my code. This is about a package called folioreader , a library for making an ebook Reader App. Currently the table of content navigation is not working for epub files. Navigating from once page/chapter to another is not working for epub that Content or ToC (Table of content) is an .xhtm file. It works for .ncx but not .xhtm

Skills and experience required:
- Strong knowledge of Swift programming language
- Experience with Xcode and Mac OS
- Familiarity with the specific version of Swift being used
- Ability to fix bugs without changing the existing architecture

Additional requirements:
- The bug should be fixed within a certain timeframe.

If you have the necessary skills and experience, and can meet the specified timeframe, please reach out to discuss further details.