It does not work on windows

[HarborZeng]

PS C:\Users\harbo\Documents\tellyouwhat.cn> hexo img
INFO  [IMG] Doing image magic...
ERROR [IMG] Proccessing failed for public/favicon.png
C:\Users\harbo\Documents\tellyouwhat.cn\node_modules\hexo-img-optimization\index.js:52
        throw err
        ^

Error: Command failed: ÎÞЧ²ÎÊý - /favicon.png

    at ChildProcess.<anonymous> (C:\Users\harbo\Documents\tellyouwhat.cn\node_modules\_imagemagick@0.1.3@imagemagick\imagemagick.js:88:15)
    at emitTwo (events.js:126:13)
    at ChildProcess.emit (events.js:214:7)
    at maybeClose (internal/child_process.js:925:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)