SpaceX came close to launching its newest and largest Starship rocket on a test flight Thursday evening, but a series of technical problems forced the company to stop the countdown less than 30 seconds before liftoff.

The 407-foot-tall rocket was set to begin a test mission from Texas that would have carried it halfway around the globe. However, problems emerged at the newly built launch pad at Starbase near the Mexico border, leaving the company without enough time to fix them before the launch window closed.

Later, Elon Musk said a hydraulic pin that secures the launch tower’s arm failed to retract properly.

Musk added that if engineers can quickly resolve the issue, another launch attempt could take place on Friday.

The delayed launch came just one day after Musk announced that SpaceX plans to become a publicly traded company.

The latest version of Starship was carrying 20 mock Starlink satellites that were supposed to be released during the flight before the spacecraft made a controlled splashdown in the Indian Ocean at the end of the planned one-hour mission.

This would have been the 12th test flight for Starship and the first since last fall.

NASA is depending on this upgraded version of Starship for its future mission to land astronauts on the moon within the next few years.