SpaceX was poised to launch another critical test flight of its massive Starship rocket on Sunday, a mission that comes with heightened stakes following a series of explosive setbacks this year.

SpaceX called off Sunday’s launch attempt of the Starship rocket about 15 minutes from launch.

Elon Musk’s company says it will try again on Monday for the next trip of its Starship prototype, which experienced setbacks during its last three flights.