Couldn't mount database "{0}" because at least one committed transaction log file appears to be missing. The log files may ...

Couldn't mount database "{0}" because at least one committed transaction log file appears to be missing. The log files may be recoverable from one of the database's continuous replication copies. If none of its copies has a valid copy of the log file, consider removing them with the Remove-MailboxDatabaseCopy cmdlet and then attempting the mount again. Error: {1}