Webview Extensions in Theia Electron

Hi. I’m having an issue with using webview extensions in an Electron instance of Theia. I get a 404 resource not found error when I open the webview.

The extension I’m using is: https://github.com/leocll/vscode-extension-webview-template

The command to open the webview is: “Example: Webview”

I also had to clone the extension repo, as I could not get the VSIX to work, but that may just be an issue with the VSIX he uploaded, I haven’t had issues with other VSIXs in Theia. If I place the repo folder into the plugins folder, the webview opens just fine, but has the 404 error instead of any contents.

The webview works fine in a browser instance of Theia.

Super sorry if this is an issue that has already come up, I looked around a little bit and couldn’t find anything, but it may have already been asked.

Any help or suggestions are appreciated!

[original thread by lucas-phillips]

Hi, no i don’t think something like that was reported, could you file an issue please?

There were some discussions how to debug resource loading for webviews in Theia. Maybe it can help you to investigate.

In Electron you should be able to open dev-tools via help menu and add breakpoints.


I will definitely look into it. Thank you for the help. I filed the issue here: https://github.com/eclipse-theia/theia/issues/7156