no such file or directory?

[iHTCboy]

/usr/local/lib/node_modules/i5ting_toc/index.js:63
if (err) throw err
^

Error: ENOENT: no such file or directory, open '/Users/HTC//Users/HTC/Desktop/abc.md'

这是什么原因，有人知道吗，谢谢！