Cannot read property 'forEach' of undefined

[rchod]

FYI the file I tried to upload was like 54 Mb

[hmafzal]

I'm seeing the same, with a file size of 60MB and using Webpack 4

[stof]

I got this when uploading a stats file generated by a multi-compiler run of webpack.

[bryanressler-idmod]

I'm seeing this exact issue with a 12MB stats file generated from webpack 4.31.0.

[mflores-verys]

Seeing this issue with a 25MB stats file generated from Webpack 4.

[rtyx]

I'm also seeing this with a 60,8MB stats.json file

[crtl]

33.5Mb also doesnt work.

[oneEyedSunday]

37.8MB also doesnt work

[JasonKleban]

For me, it was because expected stats object properties were not found by getAssetsData().

https://github.com/chrisbateman/webpack-visualizer/blob/ea9ed0b8e8c83b45c398aa7605f9d8478f031f23/src/shared/util/stat-utils.js

However you control your stats options, make sure the ones it needs are emitted:

stats: {
    ...
    chunks: true,
    assets: true,
    ...