Uncaught Exception: A Javascript error occurred in the main process in (version 11.5.1)

[rambabu-paluru-tfs]

Hi,

ElectronNET.API version - 11.5.1.0
.NET 5
NodeJS version - v12.16.3
Blazor Serverside project is running using the ElectronNET framework.

Steps to Reproduce:

1. Packaged the application using the ElectronNET.CLI (ElectronNET.CLI Version: 9.31.2.0)
2. Installed the application in Win 7 OS PC (Remote dekstop)
3. Application is running successfully after installation.
4. Close remote session by leave the application running for some time like 1 day.
5. Connect to the remote desktop and perform an action in the application which gets the GetContentSizeAsync() to get the size of the content from the BrowserWindow instance.
6. Unhandled Exception: A Javascript error occurred in the main process. After this application goes to non-responsive mode.
7. Attached the screenshot for reference.
   

Please let me know if there is any fix or workaround for the issue.
Any help?

Thanks,
Ram.

[peerem]

We have the same problem with version 11.5.1 and a Blazor Server App (.NET 5).

We would like to continue using Electron.Net in the future because it looks like the new WebWindow in .NET 6 has too many requirements for the user (installed browser).

Uncaught Exception:
Error: spawn
C:...exe
ENOENT
at Process.ChildProcess.handle.onexit (internal/child_process,js:267:19)
at onErrorNT (internal/child_process,js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:84:21)

[FancyFurret]

I have the exact same issue as @peerem, using 11.5.1 and Blazor in .NET 5. I'm on macOS if that changes anything.

Anyone figure out a workaround yet? I would like to get my project started

[miggat]

Issue still happening. I'm totally unable to run my app.

[peerem]

I switched to Chromely and I am happy.

[GregorBiswanger]

Please manually remove the host folder from the Obj directory. Then the problem should be fixed.

[GregorBiswanger]

And please use the latest version of Electron.NET + Electron.NET CLI! (Version 13.5.1)

[ReinaldoAssis]

Hi there, I've been having the same problem as mentioned above. I've deleted the Obj folder as recommended by @GregorBiswanger , but it didn't solve the problem. The strange thing is: when I run the project with electronize start /watch, it works just fine... It only throws this bug when trying to build or using electronize start. I'd really appreciate any help with this issue, best regards.

[AndyMedtronic]

I am having exactly the same problem as Reinaldo. Is there any fix to this, or are there ways round it. When it works with the /watch however I get a browser window appearing, and then the app window

[AndyMedtronic]

Had a revelation with this. My electron.manifest.json had empty strings in executable and productName. Populating these caused it to run up succesfully without the /watch

{
"executable": "ElectronServer",
"splashscreen": {
"imageFile": ""
},
"name": "",
"author": "",
"singleInstance": false,
"environment": "Production",z
"build": {
"appId": "com..app",
"productName": "ElectronServer",
.....

[ReinaldoAssis]

@AndyMedtronic You are an angel! Thanks a lot for sharing your experience, with your help I was able to figure out what I was doing wrong. I will share it here for anyone having this problem. Basically, I had changed the name of my project from OpenManga to Lexi. So my configuration was looking like this:

"executable": "Lexi",
"splashscreen": {
"imageFile": ""
},
"name": "Lexi",
"author": "Reinaldo Miranda de Assis",
"singleInstance": false,
"environment": "Production",
"build": {
"appId": "com.Lexi.app",
"productName": "Lexi",

As soon as I changed the names back to the original "OpenManga", everything worked fine! You have to be careful when renaming these kinds of things haha.

[teremy]

Since this issue is still open. I had renamed my Visual Studio Solution and the electronize build failed afterwards. I rerun electronize init and it recreated the electron.manifest.json with a different executable and name. Then the build worked again.

[GregorBiswanger]

🎉🚀 New Electron.NET version 23.6.1 released 🚀🎉

With native Electron 23 and .NET 6 support. Your problem should be fixed here. If you continue to have the problem, please let us know. Please note the correct updating of your API & CLI. Info in the README. Have fun!