Just take a good test always on, now show the synchronization, the main library for library now show the synchronization has been/is recovering, what reason is this excuse me? Which step go wrong, and were greatly inform, thank you, then I check the state of the cluster found the problem, the problem is

Cannot copy availability connection to usability group xx, the operation meet the SQL Server error 41106, has been rolled back,
For more information, please see the SQL Server error log, the error source after corrected, please retry the ALTER the AVAILABILITY GROUP JOIN command, Microsoft SQL Server, an error: (41158)


41158 how to settle this error?