Cannot Add DB on Availability Database Group

Hi Expert,

I use SQL Server 2016 Always On feature, i found at dm_hadr_availability_replica_states atcolumn recovery_health_desc = ONLINE_IN_PROGRESS, what does it mean? therefore I cannot add new Database into Availability Database Group (Primary) and get error:

Msg 41190, Level 16, State 8, Line 6 Availability group 'AOG1' failed to process add-database command. The local availability replica is not in a state that could process the command. Verify that the availability group is online and that the local availability replica is the primary replica, then retry the command

what should I do?

thanks so much for all the answer.

best regards,

Urbel.