Vaadin 7.x project does not work on Google App Engine

Vaadin 6 / 7 / 8
1

Hi all,

as part of my first attempt to the Vaadin world, I have tried to deploy a basic application (composed by a label and a button which pop-ups a notification message when it is pressed) on Google App Engine. The problem is that the output (and behaviour) is quite different depending on how the project has been set up. My examples:

  1. Vaadin 6.x project: http://my-own-old-sandbox.appspot.com/
  2. Vaadin 7.x project: http://my-own-sandbox.appspot.com/

I have the impression that Vaadin 7.x (it seems that the UI components are not properly render on the screen) are not supported on GAE, am I right?

Any help/advice is highly appreciated.

Many thanks.

2

Looks like your CSS theme is not loading in the Vaadin 7 version. Have you compiled the SCSS theme into CSS before deploying?

3

Hi John,

thank you very much for your swift reply and the useful clue, you were right: the SCSS theme was not compiled before its deployment on GAE.

Many thanks.

PS. A more detailed post can be found here:
8.3.3. Compiling Sass Themes