ReferenceError: window is not defined

[ekaaditiac]

I'm having the issue when trying to test (yarn start).

ReferenceError: window is not defined
at Object.window (/Users/ekaaditia/website/HarmonyPXMBox/www/harmony-frontend/node_modules/ml5/dist/webpack:/ml5/webpack/universalModuleDefinition:10:2)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.ml5 (/Users/ekaaditia/website/HarmonyPXMBox/www/harmony-frontend/external "ml5":1:1)
    at __webpack_require__ (/Users/ekaaditia/website/HarmonyPXMBox/www/harmony-frontend/build/webpack:/webpack/bootstrap:682:1)

the browser chrome, I'm using razzle Thank you