Can't build locally

[babyradJiri]

I clone the repo, install dependencies and when I try to build, I get an error:

UnhandledPromiseRejectionWarning: TypeError: comp.fileDependencies.push is not a function at ReloadPlugin.generate (C:\Users\user\Desktop\Counter-for-Messenger-master\node_modules\wcer\build\index.js:209:31) at compiler.plugin (C:\Users\user\Desktop\Counter-for-Messenger-master\node_modules\wcer\build\index.js:222:54) at _next3 (eval at create (C:\Users\user\Desktop\Counter-for-Messenger-master\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:53:1) at _err3 (eval at create (C:\Users\user\Desktop\Counter-for-Messenger-master\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:69:1) at Promise.all.catch.then (C:\Users\user\Desktop\Counter-for-Messenger-master\node_modules\copy-webpack-plugin\dist\index.js:91:9) (node:50980) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)

I'd really like to try and contribute, maybe add some features, but I cannot figure this out.