It's a community sheet, and not something Roll20 deals with directly. There are +800 character sheets that are in the dropdown, bout only 40-50 of them are maintained either by Roll20 directly, or the publisher. The grand majority are community-contributed sheets. The insane autocalc sheet haven't been touched in over 2 years, so it's clearly not actively developed. I did find the segment of code, and it seems the referenced image url doesn't work any longer: <a href="https://github.com/Roll20/roll20-character-sheets/blob/1cc7999ce960f3f5bd012084c32652e7269aecbf/inSANe%20auto%20cal/inSANe.html#L2621" rel="nofollow">https://github.com/Roll20/roll20-character-sheets/blob/1cc7999ce960f3f5bd012084c32652e7269aecbf/inSANe%20auto%20cal/inSANe.html#L2621</a>