I have completed a looping animation in Blender and have been trying for the past several hours to upload it to Sketchfab without much luck. The world doesn't rotate correctly on one axis and the backpack prop I made appears distorted and glitchy (see here: https://sketchfab.com/models/7d10f2a05ba047d89ea1be2b9da99f2d). I exported to FBX and unchecked NLA strips and All Actions. I tried Bake Action on the world and the backpack. I also tried uploading as a .blend file but nothing fixes it. The animation appears fine in blender (he walks on the footpath and the bag moves with him) and I'm at a loss as to how I can fix this issue. I'm out of ideas and any help would be much appreciated!