After updating from version 2.3 to version 2.8 I have found I am unable to export my .gltf file and also unable to sneak peak my app. Attached is a screenshot of the error I receive when trying to export. I have sent my project to the verge team and they were unable to replicate the error.
Things I have tried:
1. Clean install of Verge3d according to the manual.
2. Disabling V-ray.
3. Ensured none of the materials in my scene are V-ray.