After exporting a model using the glTF exporter in Blender 2.8, I noticed that when exporting to .glb format, the texture is no longer visible. Strangely, when I view the .glb file in the glTF Viewer from it appears fine, but in my environment and in the three.js editor at , the texture shows up as black. What could be causing this discrepancy and how can it be fixed? Is the glTF viewer loading something differently? You can check out the model yourself by clicking on this link: https://drive.google.com/open?id=1gqdujds0VAgU__92GgTMsgWkO1BbbnPJ
glTF Viewer - displays correctly
https://i.sstatic.net/PsZUU.png
Three.js editor - black texture (ambientlight is added)