Elon Musk’s latest Starship launch was postponed at the eleventh hour on Sunday. The latest in a growing list of SpaceX failures was to be the model’s 10th mission, and it was fully fueled ahead of a launch time of 7:35 p.

SpaceX delayed a critical test flight of its massive Starship rocket roughly half an hour before liftoff on Sunday, saying it needed to fix a liquid oxygen leak and that it would aim for another launch on Monday night.