Hello Sebastien,
thank you for your quick reply and fix! I have no more errors in my client / server setup but something is still wrong. I have basically just taken the server script from the paraview example and tried to connect to it with the [vtk.js](http://vtk.js ImageStream example).
The mouse interactions are streamed correctly, but only white images are streamed to the client:
For every mouse click only one white jpeg is uploaded
during interaction, the python server changes its size to the original window, and after the interaction it gets the size of the vtk.js renderer
the web window only shows the locally rendered cone
On this note, I would like to draw attention to the questions asked by bekos in the support channel:
The reason I am trying to change from a paraview client to ImageStream is that it enables binary image transfers. But I would also like to know what your roadmap for paraviewweb and vtk.js looks like.