У вашего броузера проблема в совместимости с HTML5
This was my experience with trying to grow a few avocado plants from a seed. I had tried in the past to grow them but wasn't doing it correctly. You have to give the seed much more time then you think, it took several months to go from new seed to root to stem with leaves. Also not all of the seeds i placed in water grew, actually it was only about 1/3.
3D Print file i used: https://www.thingiverse.com/thing:42094
All different types of designs: https://www.thingiverse.com/search?q=avocado+seed&dwh=755e41581ee10b4