我尝试使用npm run deploy将我的react项目部署在github-pages上，但出现以下错误：
events.js:167
throw er; // Unhandled 'error' event
^
Error: spawn git ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:232:19)
at onErrorNT (internal/child_process.js:407:16)
at process._tickCallback (internal/process/next_tick.js:63:19)
at Function.Module.runMain (internal/modules/cjs/loader.js:744:11)
at startup (internal/bootstrap/node.js:285:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:739:3)
Emitted 'error' event at:
at Process.ChildProcess._handle.onexit (internal/child_process.js:238:12)
at onErrorNT (internal/child_process.js:407:16)
[... lines matching original stack trace ...]
at bootstrapNodeJSCore (internal/bootstrap/node.js:739:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! songs@0.1.0 deploy: `gh-pages -d build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the songs@0.1.0 deploy script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
我已经使用过npm cache clean，删除了节点模块和package-lock.json并再次运行npm install。我是React和一般编程人员的新手，所以我无法真正弄清问题所在。任何帮助将不胜感激。