You can try the following steps to fix the problem:

1. Update NVIDIA Drivers: Make sure you have the latest drivers installed for your RTX 2060 GPU.
2. Check Blender Settings: Make sure you have the addon enabled properly in Blender.
3. OpenGL Mode: Go into Blender and try switching between OpenGL mode (Edit > Preferences > System) to see if that helps.
4. Reinstall Addons: Uninstall and reinstall the B4W CE addon to make sure there are no errors during the installation.
5. Check Terminal: Open a terminal and run Blender from there to see if there are any error messages.
If it still doesn't work, check the B4W CE forums or support page for more solutions.
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