I tried even older version SweetHome3D-5.5.2 but still same error persists

Your driver is not the latest, but not sure if this is the problem. You can try to install the 390.129 driver following this guide .
!!! AT YOUR OWN RISK !!! And without warranty!

Hello UbuntuBirdy, I have updated drivers as you instructed

https://i.postimg.cc/J0jnyVrz/Screenshot-from-2019-08 ...

I am trying to start SweetHome3D-6.2 in Ubuntu 18.04 LTS, but I am getting this error message



My system has NVIDIA GTX 1050ti GPU with NVIDIA Driver Version: 390.116.

You could create a XML file that respects Sweet Home 3D DTD , then open it with SweetHome3D.
Here's a simple file which describes 4 walls, a room, a door and a window:

...

Don't forget that the coordinates of a wall or a door/window are measured in their middle.
For doors and windows, you can ...

Hello friends,

We are working on a project where we need to tune building parameters (mentioned below) by some algorithms and visualize it's CAD output. Building parameters will be defined in the file such as .txt , .csv , etc. we just need to import these parameters into CAD software and visualize ...