"Extension server error: Object not found: <top>"

[loopmode]

The main/index.js file is attempting to open the devtools too soon: https://github.com/electron-userland/electron-webpack-quick-start/blob/master/src/main/index.js#L15-L17

This results in an error message printed to the console: "Extension server error: Object not found: <top>"

A couple of solutions are proposed in SimulatedGREG/electron-vue#389

[thoni56]

Yes, wrapping the opening of devtools inside did-frame-finish-load() worked for me.

[zivyuan]

I also encountered the same problem. In my case, the page was stuck because a piece of code created tens of thousands of image previews