Electron Builder: "Error occurred in the main process - Callback is not a function"

user_9878228 0
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I have built an Electron application which works properly when running from command-line using: npm start

I want to deploy the application as user-friendly installers for Mac/Windows/Linux. To achieve this I am using Electron-Builder for packing and building my source files. The command I use to execute the build process is: npx electron-builder.



When I try to run my packaged and built application, I immediately receive an error message stating:

A Javascript error occurred in the main process
Uncaught Exception:
TypeError: Callback is not a function
at ELECTRON_ASAR.js:600:9
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickCallback (internal/process/next_tick.js:180:9)
screenshot of error message

After clicking OK on the pop-up, the application runs as expected. 



I also receive this message if I use the npm start command after building with npx electron-builder.

I have tested on both Mac and Linux and I receive the same message. I have even tested with an empty electron project (no custom code or dependencies) and I still receive this message. Therefore I assume that it is a problem with Electron-Builder.



Any ideas as to how I can stop this error message from popping up at the start of runtime?
Thanks.

electron-builder electron npm node.js javascript
2 Answers

I was using an older version of Electron... Updating to the most recent stable release (currently 10.1.5) fixed the problem.

user_98782280

you can carry out the following suggestions

  1. Delete the app data folders in %AppData% and %LocalAppData%
  2. Re-register the javascript dll file
  3. Reinstall skype, discord, etc, app that is having problems.

if you want a detailed breakdown on the to carry out this processes, kindly go to -->https://www.thewindowsclub.com/javascript-error-occurred-in-the-main-process

user_80490210
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