Error: spawn jekyll ENOENT

[MA24th]

I fork space-jekyll-template and renamed to ma24th.github.io and clone on my computer

npm install
npm WARN [email protected] No repository field.

gulp
[21:50:25] Finished 'watch' after 40 ms
events.js:183
      throw er; // Unhandled 'error' event
      ^

Error: spawn jekyll ENOENT
    at _errnoException (util.js:1022:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
    at onErrorNT (internal/child_process.js:372:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)