For the fourth time in the last 19 months, the upper stage of SpaceX's Falcon 9 rocket experienced a problem during a mission. How long will the vehicle be grounded this time?

4 upper-stage issues in 19 months: When will SpaceX's Falcon 9 rocket return to flight?

Source: space
Source Link: https://www.space.com/space-exploration/launches-spacecraft/4-upper-stage-issues-in-19-months-when-will-spacexs-falcon-9-rocket-return-to-flight