Blue Origin scrubbed a planned launch of its New Shepard rocket Tuesday due to persistent cloud cover at the west Texas launch site.

In a post on social media, the company said an additional issue with the rocket’s avionics was discovered during the 90-minute-plus launch hold. No further details were given, and a rescheduled launch window was not immediately announced.

Earlier this month, the company, founded by billionaire Jeff Bezos, launched its first New Glenn heavy-lift vehicle, a milestone in its plans to contribute to NASA’s Artemis moon program. Blue Origin builds and tests its rocket engines in Huntsville. Some of its engines are also used on United Launch Alliance’s Vulcan rockets.