I'm not sure what you mean by errors. In order to complete the quest, my understanding was that you were to open and use voxL in your browser. I have done this, and it continues to have a cross next to that step. All other steps and quests I have done have worked fine. voxL itself is very resource intensive, and does not run well. When completing some other quests in your old interface, I thought it felt much more solid and reliable, and in all honesty more in line with the simplicity of minecraft.