Server Error in '/' Application - SPFX Tab in Teams

Has anyone else gotten this error for a Teams SPFX tab?  Any clues what might be the issue?  It was a private team and we had just added about 20-30 users who were all trying to access it at the same time so it could have been a permissions sync issue, but several people got it.  It started working after each person who got the error tried a couple of times to click the tab.