Unable to load preload script after upgrade electron-forge@6.4.2

[TianbinTobin]

Pre-flight checklist

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project uses.
• I have searched the issue tracker for a bug that matches the one I want to file, without success.

Electron Forge version

6.4.2

Electron version

v26.2.0

Operating system

Windows 10.0.22631 x64

Last known working Electron Forge version

6.4.1

Expected behavior

main_window/preload.js and main_view/preload.js load success when i run electron-forge start.

Actual behavior

main_window/preload.js load success but main_view/preload.js load failed when i run electron-forge start util i reload the main_view.

Steps to reproduce

new WebpackPlugin({
      devServer: {
        // Disallow browser from opening/reloading with HMR in development mode.
        hot: 'only',
        open: false,
        liveReload: false,
      },
      mainConfig,
      renderer: {
        config: rendererConfig,
        entryPoints: [
          {
            name: 'main_window',
            html: './static/index.html',
            js: './src/renderer/renderer.ts',
            preload: {
              js: './src/preload/main-window.ts',
            },
          },
          {
            name: 'main_view',
            preload: {
              js: './src/preload/main-view.ts',
            },
          },
        ],
      },
    }),

Additional information

https://github.com/TianbinTobin/electron-forge-issues-3343.git
Version 6.4.1 it works fine

[caoxiemeihao]

Can you provide a minimal reproduction repo?
Looks like need to login?

[erickzhao]

Might be related to #3101

[georgexu99]

Thank you for the high-quality issue report, we really appreciate the repro example :)

I cloned the repo but was unable to observe the error after a yarn and yarn start- the url loads as expected, can you say more? Otherwise I'll close this issue out in a day or two :)

[mariosplen]

The same error shows up briefly to me as well.

I simply followed the instructions to create an Electron app with React and Electron Forge from here: https://www.electronforge.io/guides/framework-integration/react.

The error starts showing when the BrowserWindow loads, and it stops showing when the HTML has loaded.

I'm using windows and npm (if that makes any difference)

Downgrading to 6.4.1 doesn't display any error.

[anwebdevelopers]

The same issue.. Downgrading to 6.4.1 works fine.

[georgexu99]

A fix is being worked on, thank you for your patience 🙇