썸네일 생성 오류..

안녕하세요!

실습 도중에 썸네일 이미지를 생성하는 부분에서 오류가 발생합니다.

Error: Cannot find ffprobe

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/ffprobe.js:145:31

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:194:9

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:473:16

[0]     at next (/Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:5329:29)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:969:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:186:13

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:123:9

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:473:16

[0]     at next (/Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:5329:29)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:969:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:116:11

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/utils.js:223:16

[0]     at F (/Users/i-mac/boilerplate-mern-stack-master/node_modules/which/which.js:68:16)

[0]     at E (/Users/i-mac/boilerplate-mern-stack-master/node_modules/which/which.js:80:29)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/which/which.js:89:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/isexe/index.js:42:5

[0] undefined

[0] /Users/i-mac/boilerplate-mern-stack-master/server/routes/upload.js:45

[0]         console.log(metadata.format.duration)

[0]                              ^

[0] 

[0] TypeError: Cannot read property 'format' of undefined

[0]     at /Users/i-mac/boilerplate-mern-stack-master/server/routes/upload.js:45:30

[0]     at handleCallback (/Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/ffprobe.js:106:9)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/ffprobe.js:145:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:194:9

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:473:16

[0]     at next (/Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:5329:29)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:969:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:186:13

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:123:9

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:473:16

[0]     at next (/Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:5329:29)

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/async/dist/async.js:969:16

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/capabilities.js:116:11

[0]     at /Users/i-mac/boilerplate-mern-stack-master/node_modules/fluent-ffmpeg/lib/utils.js:223:16

[0]     at F (/Users/i-mac/boilerplate-mern-stack-master/node_modules/which/which.js:68:16)

[0]     at E (/Users/i-mac/boilerplate-mern-stack-master/node_modules/which/which.js:80:29)

[0] [nodemon] app crashed - waiting for file changes before starting...

오류 발생 시 화면입니다

https://github.com/jhyun90/React-YouTube-Clone

답변주시면 감사하겠습니다.