In my Hexo blog, when I include special symbols inside the title in posts, it reports this error:
ERROR Process failed: _posts/en/XXX.md
YAMLException: incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line at line 1, column 54:
... for Backend System Refactoring\: How to do backend system refac ...
Include the title in single quotes, like:
title: 'How to read a book'